diff --git a/Examples/UIExplorer/ImageExample.js b/Examples/UIExplorer/ImageExample.js
index faa3267a1..b886bf861 100644
--- a/Examples/UIExplorer/ImageExample.js
+++ b/Examples/UIExplorer/ImageExample.js
@@ -21,10 +21,41 @@ var {
   StyleSheet,
   Text,
   View,
+  ActivityIndicatorIOS
 } = React;
 
 var ImageCapInsetsExample = require('./ImageCapInsetsExample');
 
+var NetworkImageExample = React.createClass({
+  watchID: (null: ?number),
+
+  getInitialState: function() {
+    return {
+      error: false,
+      loading: true,
+      progress: 0
+    };
+  },
+  render: function() {
+    var loader = this.state.loading ?
+      <View style={styles.progress}>
+        <Text>{this.state.progress}%</Text>
+        <ActivityIndicatorIOS style={{marginLeft:5}}/>
+      </View> : null;
+    return this.state.error ?
+      <Text>{this.state.error}</Text> :
+      <Image
+        source={this.props.source}
+        style={[styles.base, {overflow: 'visible'}]}
+        onLoadError={(e) => this.setState({error: e.nativeEvent.error})}
+        onLoadProgress={(e) => this.setState({progress: Math.max(0, Math.round(100 * e.nativeEvent.written / e.nativeEvent.total))}) }
+        onLoadEnd={() => this.setState({loading: false, error: false})}
+        onLoadAbort={() => this.setState({error: 'Loading has aborted'})} >
+        {loader}
+      </Image>;
+  }
+});
+
 exports.displayName = (undefined: ?string);
 exports.framework = 'React';
 exports.title = '<Image>';
@@ -59,6 +90,22 @@ exports.examples = [
       );
     },
   },
+  {
+    title: 'Error Handler',
+    render: function() {
+      return (
+        <NetworkImageExample source={{uri: 'http://TYPO_ERROR_facebook.github.io/react/img/logo_og.png'}} />
+      );
+    },
+  },
+  {
+    title: 'Image Download Progress',
+    render: function() {
+      return (
+        <NetworkImageExample source={{uri: 'http://facebook.github.io/origami/public/images/blog-hero.jpg?r=1'}}/>
+      );
+    },
+  },
   {
     title: 'Border Color',
     render: function() {
@@ -300,6 +347,12 @@ var styles = StyleSheet.create({
     width: 38,
     height: 38,
   },
+  progress: {
+    flex: 1,
+    alignItems: 'center',
+    flexDirection: 'row',
+    width: 100
+  },
   leftMargin: {
     marginLeft: 10,
   },
diff --git a/Examples/UIExplorer/TextExample.ios.js b/Examples/UIExplorer/TextExample.ios.js
index cbc3e5b41..4aff00e73 100644
--- a/Examples/UIExplorer/TextExample.ios.js
+++ b/Examples/UIExplorer/TextExample.ios.js
@@ -369,25 +369,6 @@ exports.examples = [
       </View>
     );
   },
-}, {
-  title: 'allowFontScaling attribute',
-  render: function() {
-    return (
-      <View>
-        <Text>
-          By default, text will respect Text Size accessibility setting on iOS. 
-          It means that all font sizes will be increased or descreased depending on the value of Text Size setting in
-          {" "}<Text style={{fontWeight: 'bold'}}>Settings.app - Display & Brightness - Text Size</Text>
-        </Text>
-        <Text style={{marginTop: 10}}>
-          You can disable scaling for your Text component by passing {"\""}allowFontScaling={"{"}false{"}\""} prop.
-        </Text>
-        <Text allowFontScaling={false} style={{marginTop: 20}}>
-          This text will not scale.
-        </Text>
-      </View>
-    );
-  },
 }];
 
 var styles = StyleSheet.create({
diff --git a/Examples/UIExplorer/TransformExample.js b/Examples/UIExplorer/TransformExample.js
index 9e848c3a5..7da9eb5ac 100644
--- a/Examples/UIExplorer/TransformExample.js
+++ b/Examples/UIExplorer/TransformExample.js
@@ -1,61 +1,85 @@
 /**
- * Copyright 2004-present Facebook. All Rights Reserved.
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
  *
- * @providesModule TransformExample
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 'use strict';
 
-var React = require('React');
+var React = require('react-native');
 var {
+  Animated,
   StyleSheet,
+  Text,
   View,
 } = React;
 
-var TimerMixin = require('react-timer-mixin');
-var UIExplorerBlock = require('./UIExplorerBlock');
-var UIExplorerPage = require('./UIExplorerPage');
-
-var TransformExample = React.createClass({
-
-  mixins: [TimerMixin],
-
+var Flip = React.createClass({
   getInitialState() {
     return {
-      interval: this.setInterval(this._update, 800),
-      pulse: false,
+      theta: new Animated.Value(45),
     };
   },
 
+  componentDidMount() {
+    this._animate();
+  },
+
+  _animate() {
+    this.state.theta.setValue(0);
+    Animated.timing(this.state.theta, {
+      toValue: 360,
+      duration: 5000,
+    }).start(this._animate);
+  },
+
   render() {
     return (
-      <UIExplorerPage title="Transforms">
-        <UIExplorerBlock title="foo bar">
-          <View style={{height: 500}}>
-            <View style={styles.box1} />
-            <View style={styles.box2} />
-            <View style={styles.box3step1} />
-            <View style={styles.box3step2} />
-            <View style={styles.box3step3} />
-            <View style={styles.box4} />
-            <View style={[
-              styles.box5,
-              this.state.pulse ? styles.box5Transform : null
-            ]} />
-          </View>
-        </UIExplorerBlock>
-      </UIExplorerPage>
+      <View style={styles.flipCardContainer}>
+        <Animated.View style={[
+          styles.flipCard,
+          {transform: [
+            {perspective: 850},
+            {rotateX: this.state.theta.interpolate({
+              inputRange: [0, 180],
+              outputRange: ['0deg', '180deg']
+            })},
+          ]}]}>
+          <Text style={styles.flipText}>
+            This text is flipping great.
+          </Text>
+        </Animated.View>
+        <Animated.View style={[styles.flipCard, {
+          position: 'absolute',
+          top: 0,
+          backgroundColor: 'red',
+          transform: [
+            {perspective: 850},
+            {rotateX: this.state.theta.interpolate({
+              inputRange: [0, 180],
+              outputRange: ['180deg', '360deg']
+            })},
+          ]}]}>
+          <Text style={styles.flipText}>
+            On the flip side...
+          </Text>
+        </Animated.View>
+      </View>
     );
-  },
-
-  _update() {
-    this.setState({
-      pulse: !this.state.pulse,
-    });
-  },
-
+  }
 });
 
 var styles = StyleSheet.create({
+  container: {
+    height: 500,
+  },
   box1: {
     left: 0,
     backgroundColor: 'green',
@@ -88,7 +112,7 @@ var styles = StyleSheet.create({
   },
   box3step1: {
     left: 0,
-    backgroundColor: '#ffb6c1', // lightpink
+    backgroundColor: 'lightpink',
     height: 50,
     position: 'absolute',
     top: 0,
@@ -99,7 +123,7 @@ var styles = StyleSheet.create({
   },
   box3step2: {
     left: 0,
-    backgroundColor: '#ff69b4', //hotpink
+    backgroundColor: 'hotpink',
     height: 50,
     opacity: 0.5,
     position: 'absolute',
@@ -113,7 +137,7 @@ var styles = StyleSheet.create({
   },
   box3step3: {
     left: 0,
-    backgroundColor: '#ff1493', // deeppink
+    backgroundColor: 'deeppink',
     height: 50,
     opacity: 0.5,
     position: 'absolute',
@@ -129,7 +153,7 @@ var styles = StyleSheet.create({
   },
   box4: {
     left: 0,
-    backgroundColor: '#ff8c00', // darkorange
+    backgroundColor: 'darkorange',
     height: 50,
     position: 'absolute',
     top: 0,
@@ -141,7 +165,7 @@ var styles = StyleSheet.create({
     width: 100,
   },
   box5: {
-    backgroundColor: '#800000', // maroon
+    backgroundColor: 'maroon',
     height: 50,
     position: 'absolute',
     right: 0,
@@ -155,7 +179,110 @@ var styles = StyleSheet.create({
       {scale: 2},
     ],
   },
+  flipCardContainer: {
+    marginVertical: 40,
+    flex: 1,
+    alignSelf: 'center',
+  },
+  flipCard: {
+    width: 200,
+    height: 200,
+    alignItems: 'center',
+    justifyContent: 'center',
+    backgroundColor: 'blue',
+    backfaceVisibility: 'hidden',
+  },
+  flipText: {
+    width: 90,
+    fontSize: 20,
+    color: 'white',
+    fontWeight: 'bold',
+  }
 });
 
-
-module.exports = TransformExample;
+exports.title = 'Transforms';
+exports.description = 'View transforms';
+exports.examples = [
+  {
+    title: 'Perspective',
+    description: 'perspective: 850, rotateX: Animated.timing(0 -> 360)',
+    render(): ReactElement { return <Flip />; }
+  },
+  {
+    title: 'Translate, Rotate, Scale',
+    description: "translateX: 100, translateY: 50, rotate: '30deg', scaleX: 2, scaleY: 2",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box1} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Scale, Translate, Rotate, ',
+    description: "scaleX: 2, scaleY: 2, translateX: 100, translateY: 50, rotate: '30deg'",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box2} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Rotate',
+    description: "rotate: '30deg'",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box3step1} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Rotate, Scale',
+    description: "rotate: '30deg', scaleX: 2, scaleY: 2",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box3step2} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Rotate, Scale, Translate ',
+    description: "rotate: '30deg', scaleX: 2, scaleY: 2, translateX: 100, translateY: 50",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box3step3} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Translate, Scale, Rotate',
+    description: "translate: [200, 350], scale: 2.5, rotate: '-0.2rad'",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={styles.box4} />
+        </View>
+      );
+    }
+  },
+  {
+    title: 'Translate, Rotate, Scale',
+    description: "translate: [-50, 35], rotate: '50deg', scale: 2",
+    render() {
+      return (
+        <View style={styles.container}>
+          <View style={[styles.box5, styles.box5Transform]} />
+        </View>
+      );
+    }
+  }
+];
diff --git a/Examples/UIExplorer/UIExplorer/AppDelegate.m b/Examples/UIExplorer/UIExplorer/AppDelegate.m
index 6a5ad20e5..f19fdf364 100644
--- a/Examples/UIExplorer/UIExplorer/AppDelegate.m
+++ b/Examples/UIExplorer/UIExplorer/AppDelegate.m
@@ -43,7 +43,7 @@
    * Load from pre-bundled file on disk. To re-generate the static bundle, `cd`
    * to your Xcode project folder and run
    *
-   * $ curl 'http://localhost:8081/Examples/UIExplorer/UIExplorerApp.includeRequire.runModule.bundle' -o main.jsbundle
+   * $ curl 'http://localhost:8081/Examples/UIExplorer/UIExplorerApp.ios.includeRequire.runModule.bundle' -o main.jsbundle
    *
    * then add the `main.jsbundle` file to your project and uncomment this line:
    */
diff --git a/Examples/UIExplorer/UIExplorerList.js b/Examples/UIExplorer/UIExplorerList.js
index 217797e26..20edd13b0 100644
--- a/Examples/UIExplorer/UIExplorerList.js
+++ b/Examples/UIExplorer/UIExplorerList.js
@@ -80,6 +80,7 @@ if (Platform.OS === 'ios') {
     require('./AlertIOSExample'),
     require('./AppStateIOSExample'),
     require('./AsyncStorageExample'),
+    require('./TransformExample'),
     require('./BorderExample'),
     require('./CameraRollExample.ios'),
     require('./NetInfoExample'),
diff --git a/Examples/UIExplorer/UIExplorerUnitTests/RCTBridgeTests.m b/Examples/UIExplorer/UIExplorerUnitTests/RCTBridgeTests.m
index 280aaf3b3..60f41747b 100644
--- a/Examples/UIExplorer/UIExplorerUnitTests/RCTBridgeTests.m
+++ b/Examples/UIExplorer/UIExplorerUnitTests/RCTBridgeTests.m
@@ -24,7 +24,7 @@
 
 @property (nonatomic, strong, readonly) RCTBridge *batchedBridge;
 
-- (void)_handleBuffer:(id)buffer context:(NSNumber *)context;
+- (void)_handleBuffer:(id)buffer;
 - (void)setUp;
 
 @end
@@ -57,7 +57,6 @@ RCT_EXPORT_MODULE()
 - (void)executeJSCall:(__unused NSString *)name
                method:(__unused NSString *)method
             arguments:(__unused NSArray *)arguments
-              context:(__unused NSNumber *)executorID
              callback:(RCTJavaScriptCallback)onComplete
 {
   onComplete(nil, nil);
@@ -155,7 +154,7 @@ RCT_EXPORT_MODULE(TestModule)
   NSArray *args = @[@1234, @5678, @"stringy", @{@"a": @1}, @42];
   NSArray *buffer = @[@[testModuleID], @[testMethodID], @[args], @[], @1234567];
 
-  [_bridge.batchedBridge _handleBuffer:buffer context:RCTGetExecutorID(executor)];
+  [_bridge.batchedBridge _handleBuffer:buffer];
 
   dispatch_sync(_methodQueue, ^{
     // clear the queue
diff --git a/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m b/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
index 02450fab6..18b4118ba 100644
--- a/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
+++ b/Examples/UIExplorer/UIExplorerUnitTests/RCTContextExecutorTests.m
@@ -33,7 +33,6 @@
 {
   [super setUp];
   _executor = [[RCTContextExecutor alloc] init];
-  RCTSetExecutorID(_executor);
   [_executor setUp];
 }
 
@@ -139,7 +138,6 @@ static uint64_t _get_time_nanoseconds(void)
           [_executor executeJSCall:@"module"
                            method:@"method"
                         arguments:params
-                          context:RCTGetExecutorID(_executor)
                          callback:^(id json, __unused NSError *unused) {
                            XCTAssert([json isEqual:@YES], @"Invalid return");
                          }];
diff --git a/Libraries/ART/RCTConvert+ART.m b/Libraries/ART/RCTConvert+ART.m
index e6bc09286..7a607a12c 100644
--- a/Libraries/ART/RCTConvert+ART.m
+++ b/Libraries/ART/RCTConvert+ART.m
@@ -87,7 +87,7 @@ RCT_ENUM_CONVERTER(CTTextAlignment, (@{
   }
 
   NSDictionary *fontDict = dict[@"font"];
-  CTFontRef font = (__bridge CTFontRef)[self UIFont:nil withFamily:fontDict[@"fontFamily"] size:fontDict[@"fontSize"] weight:fontDict[@"fontWeight"] style:fontDict[@"fontStyle"] scaleMultiplier:1.0];
+  CTFontRef font = (__bridge CTFontRef)[self UIFont:nil withFamily:fontDict[@"fontFamily"] size:fontDict[@"fontSize"] weight:fontDict[@"fontWeight"] style:fontDict[@"fontStyle"]];
   if (!font) {
     return frame;
   }
diff --git a/Libraries/Components/TextInput/TextInput.js b/Libraries/Components/TextInput/TextInput.js
index c0b1981e1..141cefab0 100644
--- a/Libraries/Components/TextInput/TextInput.js
+++ b/Libraries/Components/TextInput/TextInput.js
@@ -411,7 +411,7 @@ var TextInput = React.createClass({
   _renderIOS: function() {
     var textContainer;
 
-    var props = this.props;
+    var props = Object.assign({},this.props);
     props.style = [styles.input, this.props.style];
 
     if (!props.multiline) {
diff --git a/Libraries/Components/View/ViewStylePropTypes.js b/Libraries/Components/View/ViewStylePropTypes.js
index ce147e096..64ace6d7b 100644
--- a/Libraries/Components/View/ViewStylePropTypes.js
+++ b/Libraries/Components/View/ViewStylePropTypes.js
@@ -21,6 +21,7 @@ var TransformPropTypes = require('TransformPropTypes');
 var ViewStylePropTypes = {
   ...LayoutPropTypes,
   ...TransformPropTypes,
+  backfaceVisibility: ReactPropTypes.oneOf(['visible', 'hidden']),
   backgroundColor: ReactPropTypes.string,
   borderColor: ReactPropTypes.string,
   borderTopColor: ReactPropTypes.string,
diff --git a/Libraries/CustomComponents/Navigator/Navigator.js b/Libraries/CustomComponents/Navigator/Navigator.js
index bc5d65791..573223771 100644
--- a/Libraries/CustomComponents/Navigator/Navigator.js
+++ b/Libraries/CustomComponents/Navigator/Navigator.js
@@ -220,11 +220,6 @@ var Navigator = React.createClass({
      */
     onDidFocus: PropTypes.func,
 
-    /**
-     * Will be called with (ref, indexInStack, route) when the scene ref changes
-     */
-    onItemRef: PropTypes.func,
-
     /**
      * Optionally provide a navigation bar that persists across scene
      * transitions
@@ -318,7 +313,6 @@ var Navigator = React.createClass({
       onPanResponderMove: this._handlePanResponderMove,
       onPanResponderTerminate: this._handlePanResponderTerminate,
     });
-    this._itemRefs = {};
     this._interactionHandle = null;
     this._emitWillFocus(this.state.routeStack[this.state.presentedIndex]);
   },
@@ -1006,22 +1000,10 @@ var Navigator = React.createClass({
     return this.state.routeStack.slice();
   },
 
-  _handleItemRef: function(itemId, route, ref) {
-    this._itemRefs[itemId] = ref;
-    var itemIndex = this.state.idStack.indexOf(itemId);
-    if (itemIndex === -1) {
-      return;
-    }
-    this.props.onItemRef && this.props.onItemRef(ref, itemIndex, route);
-  },
-
   _cleanScenesPastIndex: function(index) {
     var newStackLength = index + 1;
     // Remove any unneeded rendered routes.
     if (newStackLength < this.state.routeStack.length) {
-      this.state.idStack.slice(newStackLength).map((removingId) => {
-        this._itemRefs[removingId] = null;
-      });
       this.setState({
         sceneConfigStack: this.state.sceneConfigStack.slice(0, newStackLength),
         idStack: this.state.idStack.slice(0, newStackLength),
@@ -1031,38 +1013,22 @@ var Navigator = React.createClass({
   },
 
   _renderScene: function(route, i) {
-    var child = this.props.renderScene(
-      route,
-      this
-    );
     var disabledSceneStyle = null;
     if (i !== this.state.presentedIndex) {
       disabledSceneStyle = styles.disabledScene;
     }
-    var originalRef = child.ref;
-    if (originalRef != null && typeof originalRef !== 'function') {
-      console.warn(
-        'String refs are not supported for navigator scenes. Use a callback ' +
-        'ref instead. Ignoring ref: ' + originalRef
-      );
-      originalRef = null;
-    }
     return (
       <View
-        key={this.state.idStack[i]}
+        key={'scene_' + i}
         ref={'scene_' + i}
         onStartShouldSetResponderCapture={() => {
           return (this.state.transitionFromIndex != null) || (this.state.transitionFromIndex != null);
         }}
         style={[styles.baseScene, this.props.sceneStyle, disabledSceneStyle]}>
-        {React.cloneElement(child, {
-          ref: component => {
-            this._handleItemRef(this.state.idStack[i], route, component);
-            if (originalRef) {
-              originalRef(component);
-            }
-          }
-        })}
+        {this.props.renderScene(
+          route,
+          this
+        )}
       </View>
     );
   },
diff --git a/Libraries/Image/RCTDownloadTaskWrapper.m b/Libraries/Image/RCTDownloadTaskWrapper.m
index b910cb476..e9a64369b 100644
--- a/Libraries/Image/RCTDownloadTaskWrapper.m
+++ b/Libraries/Image/RCTDownloadTaskWrapper.m
@@ -66,7 +66,6 @@ static void *const RCTDownloadTaskWrapperProgressBlockKey = (void *)&RCTDownload
   task.rct_completionBlock = completionBlock;
   task.rct_progressBlock = progressBlock;
 
-  [task resume];
   return task;
 }
 
diff --git a/Libraries/Image/RCTImageDownloader.m b/Libraries/Image/RCTImageDownloader.m
index 697214249..f32d895cb 100644
--- a/Libraries/Image/RCTImageDownloader.m
+++ b/Libraries/Image/RCTImageDownloader.m
@@ -14,7 +14,8 @@
 #import "RCTLog.h"
 #import "RCTUtils.h"
 
-typedef void (^RCTCachedDataDownloadBlock)(BOOL cached, NSData *data, NSError *error);
+typedef void (^RCTCachedDataDownloadBlock)(BOOL cached, NSURLResponse *response,
+                                           NSData *data, NSError *error);
 
 CGSize RCTTargetSizeForClipRect(CGRect);
 CGRect RCTClipRect(CGSize, CGFloat, CGSize, CGFloat, UIViewContentMode);
@@ -80,24 +81,36 @@ CGRect RCTClipRect(CGSize, CGFloat, CGSize, CGFloat, UIViewContentMode);
       _pendingBlocks[cacheKey] = [NSMutableArray arrayWithObject:block];
 
       __weak RCTImageDownloader *weakSelf = self;
-      RCTCachedDataDownloadBlock runBlocks = ^(BOOL cached, NSData *data, NSError *error) {
+      RCTCachedDataDownloadBlock runBlocks = ^(BOOL cached, NSURLResponse *response, NSData *data, NSError *error) {
+
+        if (!error && [response isKindOfClass:[NSHTTPURLResponse class]]) {
+          NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
+          if (httpResponse.statusCode != 200) {
+            data = nil;
+            error = [[NSError alloc] initWithDomain:NSURLErrorDomain
+                                               code:httpResponse.statusCode
+                                           userInfo:nil];
+          }
+        }
+
         dispatch_async(_processingQueue, ^{
           RCTImageDownloader *strongSelf = weakSelf;
           NSArray *blocks = strongSelf->_pendingBlocks[cacheKey];
           [strongSelf->_pendingBlocks removeObjectForKey:cacheKey];
           for (RCTCachedDataDownloadBlock downloadBlock in blocks) {
-            downloadBlock(cached, data, error);
+            downloadBlock(cached, response, data, error);
           }
         });
       };
 
       NSURLRequest *request = [NSURLRequest requestWithURL:url];
       task = [_downloadTaskWrapper downloadData:url progressBlock:progressBlock completionBlock:^(NSURLResponse *response, NSData *data, NSError *error) {
+
         if (!cancelled) {
-          runBlocks(NO, data, error);
+          runBlocks(NO, response, data, error);
         }
 
-        if (response) {
+        if (response && !error) {
           RCTImageDownloader *strongSelf = weakSelf;
           NSCachedURLResponse *cachedResponse = [[NSCachedURLResponse alloc] initWithResponse:response data:data userInfo:nil storagePolicy:NSURLCacheStorageAllowed];
           [strongSelf->_cache storeCachedResponse:cachedResponse forRequest:request];
@@ -111,7 +124,7 @@ CGRect RCTClipRect(CGSize, CGFloat, CGSize, CGFloat, UIViewContentMode);
       }
 
       if (cachedResponse) {
-        runBlocks(YES, cachedResponse.data, nil);
+        runBlocks(YES, cachedResponse.response, cachedResponse.data, nil);
       } else {
         [task resume];
       }
@@ -123,7 +136,7 @@ CGRect RCTClipRect(CGSize, CGFloat, CGSize, CGFloat, UIViewContentMode);
 
 - (RCTImageDownloadCancellationBlock)downloadDataForURL:(NSURL *)url progressBlock:(RCTDataProgressBlock)progressBlock block:(RCTDataDownloadBlock)block
 {
-  return [self _downloadDataForURL:url progressBlock:progressBlock block:^(BOOL cached, NSData *data, NSError *error) {
+  return [self _downloadDataForURL:url progressBlock:progressBlock block:^(BOOL cached, NSURLResponse *response, NSData *data, NSError *error) {
     block(data, error);
   }];
 }
diff --git a/Libraries/Image/RCTNetworkImageView.m b/Libraries/Image/RCTNetworkImageView.m
index f8dc28157..20d297b46 100644
--- a/Libraries/Image/RCTNetworkImageView.m
+++ b/Libraries/Image/RCTNetworkImageView.m
@@ -86,6 +86,8 @@ RCT_NOT_IMPLEMENTED(-initWithCoder:(NSCoder *)aDecoder)
 {
   if (![_imageURL isEqual:imageURL] && _downloadToken) {
     [_imageDownloader cancelDownload:_downloadToken];
+    NSDictionary *event = @{ @"target": self.reactTag };
+    [_eventDispatcher sendInputEventWithName:@"loadAbort" body:event];
     _downloadToken = nil;
   }
 
@@ -146,7 +148,7 @@ RCT_NOT_IMPLEMENTED(-initWithCoder:(NSCoder *)aDecoder)
             loadEndHandler();
           });
         } else if (error) {
-          errorHandler([error description]);
+          errorHandler([error localizedDescription]);
         }
       }];
     } else {
@@ -170,7 +172,7 @@ RCT_NOT_IMPLEMENTED(-initWithCoder:(NSCoder *)aDecoder)
             loadEndHandler();
           });
         } else if (error) {
-          errorHandler([error description]);
+          errorHandler([error localizedDescription]);
         }
       }];
     }
diff --git a/Libraries/Image/RCTNetworkImageViewManager.m b/Libraries/Image/RCTNetworkImageViewManager.m
index 29d990b27..f42ef48f1 100644
--- a/Libraries/Image/RCTNetworkImageViewManager.m
+++ b/Libraries/Image/RCTNetworkImageViewManager.m
@@ -47,7 +47,7 @@ RCT_CUSTOM_VIEW_PROPERTY(tintColor, UIColor, RCTNetworkImageView)
   return @{
     @"loadStart":    @{ @"registrationName": @"onLoadStart" },
     @"loadProgress": @{ @"registrationName": @"onLoadProgress" },
-    @"loaded":       @{ @"registrationName": @"onLoaded" },
+    @"loaded":       @{ @"registrationName": @"onLoadEnd" },
     @"loadError":    @{ @"registrationName": @"onLoadError" },
     @"loadAbort":    @{ @"registrationName": @"onLoadAbort" },
   };
diff --git a/Libraries/Inspector/Inspector.js b/Libraries/Inspector/Inspector.js
index 6b1ac5789..6015bcf3f 100644
--- a/Libraries/Inspector/Inspector.js
+++ b/Libraries/Inspector/Inspector.js
@@ -20,10 +20,21 @@ var StyleSheet = require('StyleSheet');
 var UIManager = require('NativeModules').UIManager;
 var View = require('View');
 
+var REACT_DEVTOOLS_HOOK: ?Object = typeof window !== 'undefined' ? window.__REACT_DEVTOOLS_BACKEND__ : null;
+
+if (REACT_DEVTOOLS_HOOK) {
+  // required for devtools to be able to edit react native styles
+  REACT_DEVTOOLS_HOOK.resolveRNStyle = require('flattenStyle');
+}
+
 class Inspector extends React.Component {
+  _subs: ?Array<() => void>;
+
   constructor(props: Object) {
     super(props);
+
     this.state = {
+      devtoolsBackend: null,
       panelPos: 'bottom',
       inspecting: true,
       perfing: false,
@@ -31,6 +42,63 @@ class Inspector extends React.Component {
     };
   }
 
+  componentDidMount() {
+    if (REACT_DEVTOOLS_HOOK) {
+      this.attachToDevtools = this.attachToDevtools.bind(this);
+      REACT_DEVTOOLS_HOOK.addStartupListener(this.attachToDevtools);
+      // if devtools is already started
+      // TODO(jared): should addStartupListener just go ahead and call the
+      // listener if the devtools is already started? might be unexpected...
+      // is there some name other than `addStartupListener` that would be
+      // better?
+      if (REACT_DEVTOOLS_HOOK.backend) {
+        this.attachToDevtools(REACT_DEVTOOLS_HOOK.backend);
+      }
+    }
+  }
+
+  componentWillUnmount() {
+    if (this._subs) {
+      this._subs.map(fn => fn());
+    }
+    if (REACT_DEVTOOLS_HOOK) {
+      REACT_DEVTOOLS_HOOK.removeStartupListener(this.attachToDevtools);
+    }
+  }
+
+  attachToDevtools(backend: Object) {
+    var _hideWait = null;
+    var hlSub = backend.sub('highlight', ({node, name, props}) => {
+      clearTimeout(_hideWait);
+      UIManager.measure(node, (x, y, width, height, left, top) => {
+        this.setState({
+          hierarchy: [],
+          inspected: {
+            frame: {left, top, width, height},
+            style: props ? props.style : {},
+          },
+        });
+      });
+    });
+    var hideSub = backend.sub('hideHighlight', () => {
+      // we wait to actually hide in order to avoid flicker
+      _hideWait = setTimeout(() => {
+        this.setState({
+          inspected: null,
+        });
+      }, 100);
+    });
+    this._subs = [hlSub, hideSub];
+
+    backend.on('shutdown', () => {
+      this.setState({devtoolsBackend: null});
+      this._subs = null;
+    });
+    this.setState({
+      devtoolsBackend: backend,
+    });
+  }
+
   setSelection(i: number) {
     var instance = this.state.hierarchy[i];
     var publicInstance = instance.getPublicInstance();
@@ -46,6 +114,9 @@ class Inspector extends React.Component {
   }
 
   onTouchInstance(instance: Object, frame: Object, pointerY: number) {
+    if (this.state.devtoolsBackend) {
+      this.state.devtoolsBackend.selectFromReactInstance(instance, true);
+    }
     var hierarchy = InspectorUtils.getOwnerHierarchy(instance);
     var publicInstance = instance.getPublicInstance();
     var props = publicInstance.props || {};
@@ -88,6 +159,7 @@ class Inspector extends React.Component {
           />}
         <View style={[styles.panelContainer, panelContainerStyle]}>
           <InspectorPanel
+            devtoolsIsOpen={!!this.state.devtoolsBackend}
             inspecting={this.state.inspecting}
             perfing={this.state.perfing}
             setPerfing={this.setPerfing.bind(this)}
diff --git a/Libraries/Inspector/InspectorOverlay.js b/Libraries/Inspector/InspectorOverlay.js
index cf9dd8d68..172a8c5fe 100644
--- a/Libraries/Inspector/InspectorOverlay.js
+++ b/Libraries/Inspector/InspectorOverlay.js
@@ -27,7 +27,11 @@ type EventLike = {
 
 var InspectorOverlay = React.createClass({
   propTypes: {
-    inspectedViewTag: PropTypes.object,
+    inspected: PropTypes.shape({
+      frame: PropTypes.object,
+      style: PropTypes.any,
+    }),
+    inspectedViewTag: PropTypes.number,
     onTouchInstance: PropTypes.func.isRequired,
   },
 
diff --git a/Libraries/Inspector/InspectorPanel.js b/Libraries/Inspector/InspectorPanel.js
index 996a2a2eb..b33d973b4 100644
--- a/Libraries/Inspector/InspectorPanel.js
+++ b/Libraries/Inspector/InspectorPanel.js
@@ -58,7 +58,7 @@ class InspectorPanel extends React.Component {
     }
     return (
       <View style={styles.container}>
-        {contents}
+        {!this.props.devtoolsIsOpen && contents}
         <View style={styles.buttonRow}>
           <Button
             title={'Inspect'}
@@ -76,6 +76,7 @@ class InspectorPanel extends React.Component {
 }
 
 InspectorPanel.propTypes = {
+  devtoolsIsOpen: PropTypes.bool,
   inspecting: PropTypes.bool,
   setInspecting: PropTypes.func,
   inspected: PropTypes.object,
diff --git a/Libraries/JavaScriptAppEngine/Initialization/ExceptionsManager.js b/Libraries/JavaScriptAppEngine/Initialization/ExceptionsManager.js
index ff2383a4c..70683ee49 100644
--- a/Libraries/JavaScriptAppEngine/Initialization/ExceptionsManager.js
+++ b/Libraries/JavaScriptAppEngine/Initialization/ExceptionsManager.js
@@ -25,13 +25,16 @@ type Exception = {
   message: string;
 }
 
+var exceptionID = 0;
+
 function reportException(e: Exception, isFatal: bool, stack?: any) {
+  var currentExceptionID = ++exceptionID;
   if (RCTExceptionsManager) {
     if (!stack) {
       stack = parseErrorStack(e);
     }
     if (isFatal) {
-      RCTExceptionsManager.reportFatalException(e.message, stack);
+      RCTExceptionsManager.reportFatalException(e.message, stack, currentExceptionID);
     } else {
       RCTExceptionsManager.reportSoftException(e.message, stack);
     }
@@ -39,7 +42,7 @@ function reportException(e: Exception, isFatal: bool, stack?: any) {
       (sourceMapPromise = sourceMapPromise || loadSourceMap())
         .then(map => {
           var prettyStack = parseErrorStack(e, map);
-          RCTExceptionsManager.updateExceptionMessage(e.message, prettyStack);
+          RCTExceptionsManager.updateExceptionMessage(e.message, prettyStack, currentExceptionID);
         })
         .catch(error => {
           // This can happen in a variety of normal situations, such as
diff --git a/Libraries/ReactIOS/__tests__/diffRawProperties-test.js b/Libraries/ReactIOS/__tests__/diffRawProperties-test.js
new file mode 100644
index 000000000..3d1fa3478
--- /dev/null
+++ b/Libraries/ReactIOS/__tests__/diffRawProperties-test.js
@@ -0,0 +1,150 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ */
+'use strict';
+
+jest.dontMock('diffRawProperties');
+jest.dontMock('deepDiffer');
+var diffRawProperties = require('diffRawProperties');
+
+describe('diffRawProperties', function() {
+
+  it('should work with simple example', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1, c: 3},
+      {b: 2, c: 3},
+      {a: true, b: true}
+    )).toEqual({a: null, b: 2});
+  });
+
+  it('should skip fields that are equal', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1, b: 'two', c: true, d: false, e: undefined, f: 0},
+      {a: 1, b: 'two', c: true, d: false, e: undefined, f: 0},
+      {a: true, b: true, c: true, d: true, e: true, f: true}
+    )).toEqual(null);
+  });
+
+  it('should remove fields', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1},
+      {},
+      {a: true}
+    )).toEqual({a: null});
+  });
+
+  it('should ignore invalid fields', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1},
+      {b: 2},
+      {}
+    )).toEqual(null);
+  });
+
+  it('should override the updatePayload argument', () => {
+    var updatePayload = {a: 1};
+    var result = diffRawProperties(
+      updatePayload,
+      {},
+      {b: 2},
+      {b: true}
+    );
+
+    expect(result).toBe(updatePayload);
+    expect(result).toEqual({a: 1, b: 2});
+  });
+
+  it('should use the diff attribute', () => {
+    var diffA = jest.genMockFunction().mockImpl((a, b) => true);
+    var diffB = jest.genMockFunction().mockImpl((a, b) => false);
+    expect(diffRawProperties(
+      null,
+      {a: [1], b: [3]},
+      {a: [2], b: [4]},
+      {a: {diff: diffA}, b: {diff: diffB}}
+    )).toEqual({a: [2]});
+    expect(diffA).toBeCalledWith([1], [2]);
+    expect(diffB).toBeCalledWith([3], [4]);
+  });
+
+  it('should not use the diff attribute on addition/removal', () => {
+    var diffA = jest.genMockFunction();
+    var diffB = jest.genMockFunction();
+    expect(diffRawProperties(
+      null,
+      {a: [1]},
+      {b: [2]},
+      {a: {diff: diffA}, b: {diff: diffB}}
+    )).toEqual({a: null, b: [2]});
+    expect(diffA).not.toBeCalled();
+    expect(diffB).not.toBeCalled();
+  });
+
+  it('should do deep diffs of Objects by default', () => {
+    expect(diffRawProperties(
+      null,
+      {a: [1], b: {k: [3,4]}, c: {k: [4,4]} },
+      {a: [2], b: {k: [3,4]}, c: {k: [4,5]} },
+      {a: true, b: true, c: true}
+    )).toEqual({a: [2], c: {k: [4,5]}});
+  });
+
+  it('should work with undefined styles', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1, c: 3},
+      undefined,
+      {a: true, b: true}
+    )).toEqual({a: null});
+    expect(diffRawProperties(
+      null,
+      undefined,
+      {a: 1, c: 3},
+      {a: true, b: true}
+    )).toEqual({a: 1});
+    expect(diffRawProperties(
+      null,
+      undefined,
+      undefined,
+      {a: true, b: true}
+    )).toEqual(null);
+  });
+
+  it('should work with empty styles', () => {
+    expect(diffRawProperties(
+      null,
+      {a: 1, c: 3},
+      {},
+      {a: true, b: true}
+    )).toEqual({a: null});
+    expect(diffRawProperties(
+      null,
+      {},
+      {a: 1, c: 3},
+      {a: true, b: true}
+    )).toEqual({a: 1});
+    expect(diffRawProperties(
+      null,
+      {},
+      {},
+      {a: true, b: true}
+    )).toEqual(null);
+  });
+
+  // Function properties are just markers to native that events should be sent.
+  it('should convert functions to booleans', () => {
+    // Note that if the property changes from one function to another, we don't
+    // need to send an update.
+    expect(diffRawProperties(
+      null,
+      {a: function() { return 1; }, b: function() { return 2; }, c: 3},
+      {b: function() { return 9; }, c: function() { return 3; }, },
+      {a: true, b: true, c: true}
+    )).toEqual({a: null, c: true});
+  });
+
+ });
diff --git a/Libraries/ReactIOS/diffRawProperties.js b/Libraries/ReactIOS/diffRawProperties.js
index ddd6edbea..96a2ae795 100644
--- a/Libraries/ReactIOS/diffRawProperties.js
+++ b/Libraries/ReactIOS/diffRawProperties.js
@@ -11,6 +11,8 @@
  */
 'use strict';
 
+var deepDiffer = require('deepDiffer');
+
 /**
  * diffRawProperties takes two sets of props and a set of valid attributes
  * and write to updatePayload the values that changed or were deleted
@@ -33,6 +35,7 @@ function diffRawProperties(
   var prevProp;
   var isScalar;
   var shouldUpdate;
+  var differ;
 
   if (nextProps) {
     for (var propKey in nextProps) {
@@ -53,16 +56,11 @@ function diffRawProperties(
       }
 
       if (prevProp !== nextProp) {
-        // If you want a property's diff to be detected, you must configure it
-        // to be so - *or* it must be a scalar property. For now, we'll allow
-        // creation with any attribute that is not scalar, but we should
-        // eventually even reject those unless they are properly configured.
+        // Scalars and new props are always updated.  Objects use deepDiffer by
+        // default, but can be optimized with custom differs.
+        differ = validAttributeConfig.diff || deepDiffer;
         isScalar = typeof nextProp !== 'object' || nextProp === null;
-        shouldUpdate = isScalar ||
-          !prevProp ||
-          validAttributeConfig.diff &&
-          validAttributeConfig.diff(prevProp, nextProp);
-
+        shouldUpdate = isScalar || !prevProp || differ(prevProp, nextProp);
         if (shouldUpdate) {
           updatePayload = updatePayload || {};
           updatePayload[propKey] = nextProp;
@@ -99,14 +97,14 @@ function diffRawProperties(
         if (nextProp === undefined) {
           nextProp = null; // null is a sentinel we explicitly send to native
         }
-        // If you want a property's diff to be detected, you must configure it
-        // to be so - *or* it must be a scalar property. For now, we'll allow
-        // creation with any attribute that is not scalar, but we should
-        // eventually even reject those unless they are properly configured.
+        // Scalars and new props are always updated.  Objects use deepDiffer by
+        // default, but can be optimized with custom differs.
+        differ = validAttributeConfig.diff || deepDiffer;
         isScalar = typeof nextProp !== 'object' || nextProp === null;
-        shouldUpdate = isScalar && prevProp !== nextProp ||
-          validAttributeConfig.diff &&
-          validAttributeConfig.diff(prevProp, nextProp);
+        shouldUpdate =
+          isScalar &&
+          prevProp !== nextProp ||
+          differ(prevProp, nextProp);
         if (shouldUpdate) {
           updatePayload = updatePayload || {};
           updatePayload[propKey] = nextProp;
diff --git a/Libraries/ReactIOS/requireNativeComponent.js b/Libraries/ReactIOS/requireNativeComponent.js
index 825739738..716b8f806 100644
--- a/Libraries/ReactIOS/requireNativeComponent.js
+++ b/Libraries/ReactIOS/requireNativeComponent.js
@@ -15,7 +15,6 @@ var RCTUIManager = require('NativeModules').UIManager;
 var UnimplementedView = require('UnimplementedView');
 
 var createReactNativeComponentClass = require('createReactNativeComponentClass');
-var deepDiffer = require('deepDiffer');
 var insetsDiffer = require('insetsDiffer');
 var pointsDiffer = require('pointsDiffer');
 var matricesDiffer = require('matricesDiffer');
@@ -54,9 +53,8 @@ function requireNativeComponent(
   viewConfig.uiViewClassName = viewName;
   viewConfig.validAttributes = {};
   for (var key in nativeProps) {
-    // TODO: deep diff by default in diffRawProperties instead of setting it here
-    var differ = TypeToDifferMap[nativeProps[key]] || deepDiffer;
-    viewConfig.validAttributes[key] = {diff: differ};
+    var differ = TypeToDifferMap[nativeProps[key]];
+    viewConfig.validAttributes[key] = differ ? {diff: differ} : true;
   }
   if (__DEV__) {
     wrapperComponent && verifyPropTypes(wrapperComponent, viewConfig);
diff --git a/Libraries/ReactNative/ReactNativeMount.js b/Libraries/ReactNative/ReactNativeMount.js
index 82efa57a6..b61f1a243 100644
--- a/Libraries/ReactNative/ReactNativeMount.js
+++ b/Libraries/ReactNative/ReactNativeMount.js
@@ -79,6 +79,12 @@ var ReactNativeMount = {
 
   _instancesByContainerID: {},
 
+  // these two functions are needed by React Devtools
+  findNodeHandle: require('findNodeHandle'),
+  nativeTagToRootNodeID: function (nativeTag: number): string {
+    return ReactNativeTagHandles.tagToRootNodeID[nativeTag];
+  },
+
   /**
    * @param {ReactComponent} instance Instance to render.
    * @param {containerTag} containerView Handle to native view tag
diff --git a/Libraries/StyleSheet/TransformPropTypes.js b/Libraries/StyleSheet/TransformPropTypes.js
index 01a16fd6a..3382bf206 100644
--- a/Libraries/StyleSheet/TransformPropTypes.js
+++ b/Libraries/StyleSheet/TransformPropTypes.js
@@ -16,7 +16,12 @@ var ReactPropTypes = require('ReactPropTypes');
 var TransformPropTypes = {
   transform: ReactPropTypes.arrayOf(
     ReactPropTypes.oneOfType([
+      ReactPropTypes.shape({perspective: ReactPropTypes.number}),
       ReactPropTypes.shape({rotate: ReactPropTypes.string}),
+      ReactPropTypes.shape({rotateX: ReactPropTypes.string}),
+      ReactPropTypes.shape({rotateY: ReactPropTypes.string}),
+      ReactPropTypes.shape({rotateZ: ReactPropTypes.string}),
+      ReactPropTypes.shape({scale: ReactPropTypes.number}),
       ReactPropTypes.shape({scaleX: ReactPropTypes.number}),
       ReactPropTypes.shape({scaleY: ReactPropTypes.number}),
       ReactPropTypes.shape({translateX: ReactPropTypes.number}),
diff --git a/Libraries/StyleSheet/precomputeStyle.js b/Libraries/StyleSheet/precomputeStyle.js
index 3294494fa..3f1955b4a 100644
--- a/Libraries/StyleSheet/precomputeStyle.js
+++ b/Libraries/StyleSheet/precomputeStyle.js
@@ -58,7 +58,17 @@ function _precomputeTransforms(style: Object): Object {
       case 'matrix':
         MatrixMath.multiplyInto(result, result, value);
         break;
+      case 'perspective':
+        _multiplyTransform(result, MatrixMath.reusePerspectiveCommand, [value]);
+        break;
+      case 'rotateX':
+        _multiplyTransform(result, MatrixMath.reuseRotateXCommand, [_convertToRadians(value)]);
+        break;
+      case 'rotateY':
+        _multiplyTransform(result, MatrixMath.reuseRotateYCommand, [_convertToRadians(value)]);
+        break;
       case 'rotate':
+      case 'rotateZ':
         _multiplyTransform(result, MatrixMath.reuseRotateZCommand, [_convertToRadians(value)]);
         break;
       case 'scale':
@@ -156,6 +166,9 @@ function _validateTransform(key, value, transformation) {
       break;
     case 'translate':
       break;
+    case 'rotateX':
+    case 'rotateY':
+    case 'rotateZ':
     case 'rotate':
       invariant(
         typeof value === 'string',
diff --git a/Libraries/Text/RCTShadowRawText.m b/Libraries/Text/RCTShadowRawText.m
index 4f79d64b5..00a3490bc 100644
--- a/Libraries/Text/RCTShadowRawText.m
+++ b/Libraries/Text/RCTShadowRawText.m
@@ -9,32 +9,8 @@
 
 #import "RCTShadowRawText.h"
 
-#import "RCTUIManager.h"
-
 @implementation RCTShadowRawText
 
-- (instancetype)init
-{
-  if ((self = [super init])) {
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(contentSizeMultiplierDidChange:)
-                                                 name:RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification
-                                               object:nil];
-  }
-  return self;
-}
-
-- (void)dealloc
-{
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-}
-
-- (void)contentSizeMultiplierDidChange:(NSNotification *)note
-{
-  [self dirtyLayout];
-  [self dirtyText];
-}
-
 - (void)setText:(NSString *)text
 {
   if (_text != text) {
diff --git a/Libraries/Text/RCTShadowText.h b/Libraries/Text/RCTShadowText.h
index abb111879..fe87e99c1 100644
--- a/Libraries/Text/RCTShadowText.h
+++ b/Libraries/Text/RCTShadowText.h
@@ -30,8 +30,6 @@ extern NSString *const RCTReactTagAttributeName;
 @property (nonatomic, strong) UIColor *textDecorationColor;
 @property (nonatomic, assign) NSUnderlineStyle textDecorationStyle;
 @property (nonatomic, assign) RCTTextDecorationLineType textDecorationLine;
-@property (nonatomic, assign) CGFloat fontSizeMultiplier;
-@property (nonatomic, assign) BOOL allowFontScaling;
 
 - (void)recomputeText;
 
diff --git a/Libraries/Text/RCTShadowText.m b/Libraries/Text/RCTShadowText.m
index adcca5aed..621df1ed6 100644
--- a/Libraries/Text/RCTShadowText.m
+++ b/Libraries/Text/RCTShadowText.m
@@ -9,9 +9,6 @@
 
 #import "RCTShadowText.h"
 
-#import "RCTAccessibilityManager.h"
-#import "RCTUIManager.h"
-#import "RCTBridge.h"
 #import "RCTConvert.h"
 #import "RCTLog.h"
 #import "RCTShadowRawText.h"
@@ -54,31 +51,16 @@ static css_dim_t RCTMeasure(void *context, float width)
     _letterSpacing = NAN;
     _isHighlighted = NO;
     _textDecorationStyle = NSUnderlineStyleSingle;
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(contentSizeMultiplierDidChange:)
-                                                 name:RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification
-                                               object:nil];
   }
   return self;
 }
 
-- (void)dealloc
-{
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-}
-
 - (NSString *)description
 {
   NSString *superDescription = super.description;
   return [[superDescription substringToIndex:superDescription.length - 1] stringByAppendingFormat:@"; text: %@>", [self attributedString].string];
 }
 
-- (void)contentSizeMultiplierDidChange:(NSNotification *)note
-{
-  [self dirtyLayout];
-  [self dirtyText];
-}
-
 - (NSDictionary *)processUpdatedProperties:(NSMutableSet *)applierBlocks
                           parentProperties:(NSDictionary *)parentProperties
 {
@@ -208,9 +190,7 @@ static css_dim_t RCTMeasure(void *context, float width)
     [self _addAttribute:NSBackgroundColorAttributeName withValue:self.backgroundColor toAttributedString:attributedString];
   }
 
-  UIFont *font = [RCTConvert UIFont:nil withFamily:fontFamily
-                               size:fontSize weight:fontWeight style:fontStyle
-                    scaleMultiplier:(_allowFontScaling && _fontSizeMultiplier > 0.0 ? _fontSizeMultiplier : 1.0)];
+  UIFont *font = [RCTConvert UIFont:nil withFamily:fontFamily size:fontSize weight:fontWeight style:fontStyle];
   [self _addAttribute:NSFontAttributeName withValue:font toAttributedString:attributedString];
   [self _addAttribute:NSKernAttributeName withValue:letterSpacing toAttributedString:attributedString];
   [self _addAttribute:RCTReactTagAttributeName withValue:self.reactTag toAttributedString:attributedString];
@@ -267,9 +247,8 @@ static css_dim_t RCTMeasure(void *context, float width)
     NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
     paragraphStyle.alignment = _textAlign;
     paragraphStyle.baseWritingDirection = _writingDirection;
-    CGFloat lineHeight = round(_lineHeight * self.fontSizeMultiplier);
-    paragraphStyle.minimumLineHeight = lineHeight;
-    paragraphStyle.maximumLineHeight = lineHeight;
+    paragraphStyle.minimumLineHeight = _lineHeight;
+    paragraphStyle.maximumLineHeight = _lineHeight;
     [attributedString addAttribute:NSParagraphStyleAttributeName
                              value:paragraphStyle
                              range:(NSRange){0, attributedString.length}];
@@ -342,26 +321,4 @@ RCT_TEXT_PROPERTY(TextDecorationLine, _textDecorationLine, RCTTextDecorationLine
 RCT_TEXT_PROPERTY(TextDecorationStyle, _textDecorationStyle, NSUnderlineStyle);
 RCT_TEXT_PROPERTY(WritingDirection, _writingDirection, NSWritingDirection)
 
-- (void)setAllowFontScaling:(BOOL)allowFontScaling
-{
-  _allowFontScaling = allowFontScaling;
-  for (RCTShadowView *child in [self reactSubviews]) {
-    if ([child isKindOfClass:[RCTShadowText class]]) {
-      [(RCTShadowText *)child setAllowFontScaling:allowFontScaling];
-    }
-  }
-  [self dirtyText];
-}
-
-- (void)setFontSizeMultiplier:(CGFloat)fontSizeMultiplier
-{
-  _fontSizeMultiplier = fontSizeMultiplier;
-  for (RCTShadowView *child in [self reactSubviews]) {
-    if ([child isKindOfClass:[RCTShadowText class]]) {
-      [(RCTShadowText *)child setFontSizeMultiplier:fontSizeMultiplier];
-    }
-  }
-  [self dirtyText];
-}
-
 @end
diff --git a/Libraries/Text/RCTTextManager.m b/Libraries/Text/RCTTextManager.m
index 06d52088a..b5f959b73 100644
--- a/Libraries/Text/RCTTextManager.m
+++ b/Libraries/Text/RCTTextManager.m
@@ -9,7 +9,6 @@
 
 #import "RCTTextManager.h"
 
-#import "RCTAccessibilityManager.h"
 #import "RCTAssert.h"
 #import "RCTConvert.h"
 #import "RCTLog.h"
@@ -50,7 +49,6 @@ RCT_EXPORT_SHADOW_PROPERTY(textDecorationStyle, NSUnderlineStyle)
 RCT_EXPORT_SHADOW_PROPERTY(textDecorationColor, UIColor)
 RCT_EXPORT_SHADOW_PROPERTY(textDecorationLine, RCTTextDecorationLineType)
 RCT_EXPORT_SHADOW_PROPERTY(writingDirection, NSWritingDirection)
-RCT_EXPORT_SHADOW_PROPERTY(allowFontScaling, BOOL)
 
 - (RCTViewManagerUIBlock)uiBlockToAmendWithShadowViewRegistry:(RCTSparseArray *)shadowViewRegistry
 {
@@ -71,7 +69,6 @@ RCT_EXPORT_SHADOW_PROPERTY(allowFontScaling, BOOL)
       RCTAssert([shadowView isTextDirty], @"Don't process any nodes that don't have dirty text");
 
       if ([shadowView isKindOfClass:[RCTShadowText class]]) {
-        [(RCTShadowText *)shadowView setFontSizeMultiplier:self.bridge.accessibilityManager.multiplier];
         [(RCTShadowText *)shadowView recomputeText];
       } else if ([shadowView isKindOfClass:[RCTShadowRawText class]]) {
         RCTLogError(@"Raw text cannot be used outside of a <Text> tag. Not rendering string: '%@'",
diff --git a/Libraries/Text/Text.js b/Libraries/Text/Text.js
index 7b370ac39..d02733749 100644
--- a/Libraries/Text/Text.js
+++ b/Libraries/Text/Text.js
@@ -30,7 +30,6 @@ var viewConfig = {
   validAttributes: merge(ReactNativeViewAttributes.UIView, {
     isHighlighted: true,
     numberOfLines: true,
-    allowFontScaling: true,
   }),
   uiViewClassName: 'RCTText',
 };
@@ -100,27 +99,16 @@ var Text = React.createClass({
      *
      *   {nativeEvent: {layout: {x, y, width, height}}}.
      */
-    onLayout: React.PropTypes.func,
-    /**
-     * Specifies should fonts scale to respect Text Size accessibility setting.
-     */ 
-    allowFontScaling: React.PropTypes.bool,
+     onLayout: React.PropTypes.func,
   },
 
   viewConfig: viewConfig,
 
-  getInitialState: function(): Object {
+  getInitialState: function() {
     return merge(this.touchableGetInitialState(), {
       isHighlighted: false,
     });
   },
-  
-  getDefaultProps: function(): Object {
-    return {
-      numberOfLines: 0,
-      allowFontScaling: true,
-    };
-  },
 
   onStartShouldSetResponder: function(): bool {
     var shouldSetFromProps = this.props.onStartShouldSetResponder &&
@@ -243,7 +231,6 @@ if (Platform.OS === 'android') {
   RCTVirtualText = createReactNativeComponentClass({
     validAttributes: merge(ReactNativeViewAttributes.UIView, {
       isHighlighted: true,
-      allowFontScaling: false,
     }),
     uiViewClassName: 'RCTVirtualText',
   });
diff --git a/Libraries/Utilities/MatrixMath.js b/Libraries/Utilities/MatrixMath.js
index 0550eb187..c6a26ea82 100755
--- a/Libraries/Utilities/MatrixMath.js
+++ b/Libraries/Utilities/MatrixMath.js
@@ -65,6 +65,10 @@ var MatrixMath = {
     matrixCommand[10] = z;
   },
 
+  reusePerspectiveCommand: function(matrixCommand, p) {
+    matrixCommand[11] = -1 / p;
+  },
+
   reuseScaleXCommand(matrixCommand, factor) {
     matrixCommand[0] = factor;
   },
diff --git a/Libraries/WebSocket/RCTWebSocketExecutor.m b/Libraries/WebSocket/RCTWebSocketExecutor.m
index 0f8f433b0..08b130314 100644
--- a/Libraries/WebSocket/RCTWebSocketExecutor.m
+++ b/Libraries/WebSocket/RCTWebSocketExecutor.m
@@ -97,7 +97,7 @@ RCT_EXPORT_MODULE()
 {
   __block NSError *initError;
   dispatch_semaphore_t s = dispatch_semaphore_create(0);
-  [self sendMessage:@{@"method": @"prepareJSRuntime"} context:nil waitForReply:^(NSError *error, NSDictionary *reply) {
+  [self sendMessage:@{@"method": @"prepareJSRuntime"} waitForReply:^(NSError *error, NSDictionary *reply) {
     initError = error;
     dispatch_semaphore_signal(s);
   }];
@@ -126,7 +126,7 @@ RCT_EXPORT_MODULE()
   RCTLogError(@"WebSocket connection failed with error %@", error);
 }
 
-- (void)sendMessage:(NSDictionary *)message context:(NSNumber *)executorID waitForReply:(RCTWSMessageCallback)callback
+- (void)sendMessage:(NSDictionary *)message waitForReply:(RCTWSMessageCallback)callback
 {
   static NSUInteger lastID = 10000;
 
@@ -137,8 +137,6 @@ RCT_EXPORT_MODULE()
       }];
       callback(error, nil);
       return;
-    } else if (executorID && ![RCTGetExecutorID(self) isEqualToNumber:executorID]) {
-      return;
     }
 
     NSNumber *expectedID = @(lastID++);
@@ -152,12 +150,12 @@ RCT_EXPORT_MODULE()
 - (void)executeApplicationScript:(NSString *)script sourceURL:(NSURL *)URL onComplete:(RCTJavaScriptCompleteBlock)onComplete
 {
   NSDictionary *message = @{@"method": @"executeApplicationScript", @"url": [URL absoluteString], @"inject": _injectedObjects};
-  [self sendMessage:message context:nil waitForReply:^(NSError *error, NSDictionary *reply) {
+  [self sendMessage:message waitForReply:^(NSError *error, NSDictionary *reply) {
     onComplete(error);
   }];
 }
 
-- (void)executeJSCall:(NSString *)name method:(NSString *)method arguments:(NSArray *)arguments context:(NSNumber *)executorID callback:(RCTJavaScriptCallback)onComplete
+- (void)executeJSCall:(NSString *)name method:(NSString *)method arguments:(NSArray *)arguments callback:(RCTJavaScriptCallback)onComplete
 {
   RCTAssert(onComplete != nil, @"callback was missing for exec JS call");
   NSDictionary *message = @{
@@ -166,7 +164,7 @@ RCT_EXPORT_MODULE()
     @"moduleMethod": method,
     @"arguments": arguments
   };
-  [self sendMessage:message context:executorID waitForReply:^(NSError *socketError, NSDictionary *reply) {
+  [self sendMessage:message waitForReply:^(NSError *socketError, NSDictionary *reply) {
     if (socketError) {
       onComplete(nil, socketError);
       return;
diff --git a/React.podspec b/React.podspec
index 8c4992817..d5193bfcb 100644
--- a/React.podspec
+++ b/React.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name                = "React"
-  s.version             = "0.4.4"
+  s.version             = "0.8.0"
   s.summary             = "Build high quality mobile apps using React."
   s.description         = <<-DESC
                             React Native apps are built using the React JS
diff --git a/React/Base/RCTBatchedBridge.m b/React/Base/RCTBatchedBridge.m
index b1bb6cf1a..138e11695 100644
--- a/React/Base/RCTBatchedBridge.m
+++ b/React/Base/RCTBatchedBridge.m
@@ -200,7 +200,6 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
    */
   _javaScriptExecutor = _modulesByName[RCTBridgeModuleNameForClass(self.executorClass)];
   RCTLatestExecutor = _javaScriptExecutor;
-  RCTSetExecutorID(_javaScriptExecutor);
 
   [_javaScriptExecutor setUp];
 
@@ -239,7 +238,11 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
   [_javaScriptExecutor injectJSONText:configJSON
                   asGlobalObjectNamed:@"__fbBatchedBridgeConfig" callback:
-   ^(__unused id err) {
+   ^(NSError *error) {
+     if (error) {
+       [[RCTRedBox sharedInstance] showError:error];
+     }
+
      dispatch_semaphore_signal(semaphore);
    }];
 
@@ -302,22 +305,21 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 
         [self enqueueApplicationScript:script url:bundleURL onComplete:^(NSError *loadError) {
 
-          if (!loadError) {
-
-            /**
-             * Register the display link to start sending js calls after everything
-             * is setup
-             */
-            NSRunLoop *targetRunLoop = [_javaScriptExecutor isKindOfClass:[RCTContextExecutor class]] ? [NSRunLoop currentRunLoop] : [NSRunLoop mainRunLoop];
-            [_jsDisplayLink addToRunLoop:targetRunLoop forMode:NSRunLoopCommonModes];
-
-            [[NSNotificationCenter defaultCenter] postNotificationName:RCTJavaScriptDidLoadNotification
-                                                                object:_parentBridge
-                                                              userInfo:@{ @"bridge": self }];
-          } else {
-            [[RCTRedBox sharedInstance] showErrorMessage:[loadError localizedDescription]
-                                             withDetails:[loadError localizedFailureReason]];
+          if (loadError) {
+            [[RCTRedBox sharedInstance] showError:loadError];
+            return;
           }
+
+          /**
+           * Register the display link to start sending js calls after everything
+           * is setup
+           */
+          NSRunLoop *targetRunLoop = [_javaScriptExecutor isKindOfClass:[RCTContextExecutor class]] ? [NSRunLoop currentRunLoop] : [NSRunLoop mainRunLoop];
+          [_jsDisplayLink addToRunLoop:targetRunLoop forMode:NSRunLoopCommonModes];
+
+          [[NSNotificationCenter defaultCenter] postNotificationName:RCTJavaScriptDidLoadNotification
+                                                              object:_parentBridge
+                                                            userInfo:@{ @"bridge": self }];
         }];
       }
     }];
@@ -407,8 +409,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 
   [self _invokeAndProcessModule:@"BatchedBridge"
                          method:@"callFunctionReturnFlushedQueue"
-                      arguments:@[ids[0], ids[1], args ?: @[]]
-                        context:RCTGetExecutorID(_javaScriptExecutor)];
+                      arguments:@[ids[0], ids[1], args ?: @[]]];
 }
 
 /**
@@ -421,8 +422,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   dispatch_block_t block = ^{
     [self _actuallyInvokeAndProcessModule:@"BatchedBridge"
                                    method:@"callFunctionReturnFlushedQueue"
-                                arguments:@[@"JSTimersExecution", @"callTimers", @[@[timer]]]
-                                  context:RCTGetExecutorID(_javaScriptExecutor)];
+                                arguments:@[@"JSTimersExecution", @"callTimers", @[@[timer]]]];
   };
 
   if ([_javaScriptExecutor respondsToSelector:@selector(executeAsyncBlockOnJavaScriptQueue:)]) {
@@ -447,18 +447,16 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
     }
 
     RCTProfileBeginEvent();
-    NSNumber *context = RCTGetExecutorID(_javaScriptExecutor);
     [_javaScriptExecutor executeJSCall:@"BatchedBridge"
                                 method:@"flushedQueue"
                              arguments:@[]
-                               context:context
                               callback:^(id json, NSError *error) {
                                 RCTProfileEndEvent(@"FetchApplicationScriptCallbacks", @"js_call,init", @{
                                   @"json": RCTNullIfNil(json),
                                   @"error": RCTNullIfNil(error),
                                 });
 
-                                [self _handleBuffer:json context:context];
+                                [self _handleBuffer:json];
 
                                 onComplete(error);
                               }];
@@ -467,22 +465,11 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
 
 #pragma mark - Payload Generation
 
-/**
- * TODO: Completely remove `context` - no longer needed
- */
-- (void)_invokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args
-{
-  [self _invokeAndProcessModule:module
-                         method:method
-                      arguments:args
-                        context:RCTGetExecutorID(_javaScriptExecutor)];
-}
-
 /**
  * Called by enqueueJSCall from any thread, or from _immediatelyCallTimer,
  * on the JS thread, but only in non-batched mode.
  */
-- (void)_invokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args context:(NSNumber *)context
+- (void)_invokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args
 {
   /**
    * AnyThread
@@ -508,7 +495,6 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
         @"method": method,
         @"args": args,
       },
-      @"context": context ?: @0,
       RCT_IF_DEV(@"call_id": callID,)
     };
     if ([method isEqualToString:@"invokeCallbackAndReturnFlushedQueue"]) {
@@ -521,30 +507,33 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   }];
 }
 
-- (void)_actuallyInvokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args context:(NSNumber *)context
+- (void)_actuallyInvokeAndProcessModule:(NSString *)module method:(NSString *)method arguments:(NSArray *)args
 {
   RCTAssertJSThread();
 
   [[NSNotificationCenter defaultCenter] postNotificationName:RCTEnqueueNotification object:nil userInfo:nil];
 
-  RCTJavaScriptCallback processResponse = ^(id json, __unused NSError *error) {
+  RCTJavaScriptCallback processResponse = ^(id json, NSError *error) {
+    if (error) {
+      [[RCTRedBox sharedInstance] showError:error];
+    }
+
     if (!self.isValid) {
       return;
     }
     [[NSNotificationCenter defaultCenter] postNotificationName:RCTDequeueNotification object:nil userInfo:nil];
-    [self _handleBuffer:json context:context];
+    [self _handleBuffer:json];
   };
 
   [_javaScriptExecutor executeJSCall:module
                               method:method
                            arguments:args
-                             context:context
                             callback:processResponse];
 }
 
 #pragma mark - Payload Processing
 
-- (void)_handleBuffer:(id)buffer context:(NSNumber *)context
+- (void)_handleBuffer:(id)buffer
 {
   RCTAssertJSThread();
 
@@ -607,8 +596,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
           [self _handleRequestNumber:index
                             moduleID:[moduleIDs[index] integerValue]
                             methodID:[methodIDs[index] integerValue]
-                              params:paramsArrays[index]
-                             context:context];
+                              params:paramsArrays[index]];
         }
       }
  RCTProfileEndEvent(RCTCurrentThreadName(), @"objc_call,dispatch_async", @{ @"calls": @(calls.count) });
@@ -629,7 +617,6 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
                     moduleID:(NSUInteger)moduleID
                     methodID:(NSUInteger)methodID
                       params:(NSArray *)params
-                     context:(NSNumber *)context
 {
   if (!self.isValid) {
     return NO;
@@ -656,7 +643,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   }
 
   @try {
-    [method invokeWithBridge:self module:moduleData.instance arguments:params context:context];
+    [method invokeWithBridge:self module:moduleData.instance arguments:params];
   }
   @catch (NSException *exception) {
     RCTLogError(@"Exception thrown while invoking %@ on target %@ with params %@: %@", method.JSMethodName, moduleData.name, params, exception);
@@ -697,12 +684,6 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
   }
 
   NSArray *calls = [_scheduledCallbacks.allObjects arrayByAddingObjectsFromArray:_scheduledCalls];
-  NSNumber *currentExecutorID = RCTGetExecutorID(_javaScriptExecutor);
-  calls = [calls filteredArrayUsingPredicate:
-           [NSPredicate predicateWithBlock:
-            ^BOOL(NSDictionary *call, __unused NSDictionary *bindings) {
-    return [call[@"context"] isEqualToNumber:currentExecutorID];
-  }]];
 
   RCT_IF_DEV(
     RCTProfileImmediateEvent(@"JS Thread Tick", displayLink.timestamp, @"g");
@@ -717,8 +698,7 @@ RCT_NOT_IMPLEMENTED(-initWithBundleURL:(__unused NSURL *)bundleURL
     _scheduledCallbacks = [[RCTSparseArray alloc] init];
     [self _actuallyInvokeAndProcessModule:@"BatchedBridge"
                                    method:@"processBatch"
-                                arguments:@[[calls valueForKey:@"js_args"]]
-                                  context:RCTGetExecutorID(_javaScriptExecutor)];
+                                arguments:@[[calls valueForKey:@"js_args"]]];
   }
 
   RCTProfileEndEvent(@"DispatchFrameUpdate", @"objc_call", nil);
diff --git a/React/Base/RCTBridge.m b/React/Base/RCTBridge.m
index c6baf82a6..b81eae17a 100644
--- a/React/Base/RCTBridge.m
+++ b/React/Base/RCTBridge.m
@@ -230,7 +230,6 @@ RCT_NOT_IMPLEMENTED(-init)
     [RCTGetLatestExecutor() executeJSCall:@"RCTLog"
                                    method:@"logIfNoNativeHook"
                                 arguments:@[level, message]
-                                  context:RCTGetExecutorID(RCTGetLatestExecutor())
                                  callback:^(__unused id json, __unused NSError *error) {}];
   });
 }
@@ -254,7 +253,6 @@ RCT_NOT_IMPLEMENTED(-init)
 
 RCT_INNER_BRIDGE_ONLY(_invokeAndProcessModule:(__unused NSString *)module
                       method:(__unused NSString *)method
-                      arguments:(__unused NSArray *)args
-                      context:(__unused NSNumber *)context)
+                      arguments:(__unused NSArray *)args);
 
 @end
diff --git a/React/Base/RCTConvert.h b/React/Base/RCTConvert.h
index d4657ec74..50b677dd9 100644
--- a/React/Base/RCTConvert.h
+++ b/React/Base/RCTConvert.h
@@ -91,8 +91,7 @@ typedef NSURL RCTFileURL;
 + (UIFont *)UIFont:(UIFont *)font withStyle:(id)json;
 + (UIFont *)UIFont:(UIFont *)font withFamily:(id)json;
 + (UIFont *)UIFont:(UIFont *)font withFamily:(id)family
-              size:(id)size weight:(id)weight style:(id)style
-   scaleMultiplier:(CGFloat)scaleMultiplier;
+              size:(id)size weight:(id)weight style:(id)style;
 
 typedef NSArray NSStringArray;
 + (NSStringArray *)NSStringArray:(id)json;
@@ -121,8 +120,9 @@ typedef NSArray CGColorArray;
 typedef id NSPropertyList;
 + (NSPropertyList)NSPropertyList:(id)json;
 
-typedef BOOL css_clip_t;
+typedef BOOL css_clip_t, css_backface_visibility_t;
 + (css_clip_t)css_clip_t:(id)json;
++ (css_backface_visibility_t)css_backface_visibility_t:(id)json;
 + (css_flex_direction_t)css_flex_direction_t:(id)json;
 + (css_justify_t)css_justify_t:(id)json;
 + (css_align_t)css_align_t:(id)json;
diff --git a/React/Base/RCTConvert.m b/React/Base/RCTConvert.m
index 2ff271f64..e61e6f6ed 100644
--- a/React/Base/RCTConvert.m
+++ b/React/Base/RCTConvert.m
@@ -779,33 +779,31 @@ static BOOL RCTFontIsCondensed(UIFont *font)
            withFamily:json[@"fontFamily"]
                  size:json[@"fontSize"]
                weight:json[@"fontWeight"]
-                style:json[@"fontStyle"]
-          scaleMultiplier:1.0f];
+                style:json[@"fontStyle"]];
 }
 
 + (UIFont *)UIFont:(UIFont *)font withSize:(id)json
 {
-  return [self UIFont:font withFamily:nil size:json weight:nil style:nil scaleMultiplier:1.0];
+  return [self UIFont:font withFamily:nil size:json weight:nil style:nil];
 }
 
 + (UIFont *)UIFont:(UIFont *)font withWeight:(id)json
 {
-  return [self UIFont:font withFamily:nil size:nil weight:json style:nil scaleMultiplier:1.0];
+  return [self UIFont:font withFamily:nil size:nil weight:json style:nil];
 }
 
 + (UIFont *)UIFont:(UIFont *)font withStyle:(id)json
 {
-  return [self UIFont:font withFamily:nil size:nil weight:nil style:json scaleMultiplier:1.0];
+  return [self UIFont:font withFamily:nil size:nil weight:nil style:json];
 }
 
 + (UIFont *)UIFont:(UIFont *)font withFamily:(id)json
 {
-  return [self UIFont:font withFamily:json size:nil weight:nil style:nil scaleMultiplier:1.0];
+  return [self UIFont:font withFamily:json size:nil weight:nil style:nil];
 }
 
 + (UIFont *)UIFont:(UIFont *)font withFamily:(id)family
               size:(id)size weight:(id)weight style:(id)style
-   scaleMultiplier:(CGFloat)scaleMultiplier
 {
   // Defaults
   NSString *const RCTDefaultFontFamily = @"System";
@@ -830,9 +828,6 @@ static BOOL RCTFontIsCondensed(UIFont *font)
 
   // Get font attributes
   fontSize = [self CGFloat:size] ?: fontSize;
-  if (scaleMultiplier > 0.0 && scaleMultiplier != 1.0) {
-    fontSize = round(fontSize * scaleMultiplier);
-  }
   familyName = [self NSString:family] ?: familyName;
   isItalic = style ? [self RCTFontStyle:style] : isItalic;
   fontWeight = weight ? [self RCTFontWeight:weight] : fontWeight;
@@ -998,6 +993,11 @@ static id RCTConvertPropertyListValue(id json)
   return RCTConvertPropertyListValue(json);
 }
 
+RCT_ENUM_CONVERTER(css_backface_visibility_t, (@{
+  @"hidden": @NO,
+  @"visible": @YES
+}), YES, boolValue)
+
 RCT_ENUM_CONVERTER(css_clip_t, (@{
   @"hidden": @YES,
   @"visible": @NO
diff --git a/React/Base/RCTJavaScriptExecutor.h b/React/Base/RCTJavaScriptExecutor.h
index fa5afc5cb..af4b4cef6 100644
--- a/React/Base/RCTJavaScriptExecutor.h
+++ b/React/Base/RCTJavaScriptExecutor.h
@@ -36,7 +36,6 @@ typedef void (^RCTJavaScriptCallback)(id json, NSError *error);
 - (void)executeJSCall:(NSString *)name
                method:(NSString *)method
             arguments:(NSArray *)arguments
-              context:(NSNumber *)executorID
              callback:(RCTJavaScriptCallback)onComplete;
 
 /**
@@ -66,6 +65,3 @@ typedef void (^RCTJavaScriptCallback)(id json, NSError *error);
 - (void)executeAsyncBlockOnJavaScriptQueue:(dispatch_block_t)block;
 
 @end
-
-void RCTSetExecutorID(id<RCTJavaScriptExecutor> executor);
-NSNumber *RCTGetExecutorID(id<RCTJavaScriptExecutor> executor);
diff --git a/React/Base/RCTJavaScriptExecutor.m b/React/Base/RCTJavaScriptExecutor.m
deleted file mode 100644
index 04e3db433..000000000
--- a/React/Base/RCTJavaScriptExecutor.m
+++ /dev/null
@@ -1,26 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import "RCTJavaScriptExecutor.h"
-
-
-static const char *RCTJavaScriptExecutorID = "RCTJavaScriptExecutorID";
-
-void RCTSetExecutorID(id<RCTJavaScriptExecutor> executor)
-{
-  static NSUInteger executorID = 0;
-  if (executor) {
-    objc_setAssociatedObject(executor, RCTJavaScriptExecutorID, @(++executorID), OBJC_ASSOCIATION_RETAIN);
-  }
-}
-
-NSNumber *RCTGetExecutorID(id<RCTJavaScriptExecutor> executor)
-{
-  return executor ? objc_getAssociatedObject(executor, RCTJavaScriptExecutorID) : @0;
-}
diff --git a/React/Base/RCTModuleMethod.h b/React/Base/RCTModuleMethod.h
index ffaa22ef7..710b1b899 100644
--- a/React/Base/RCTModuleMethod.h
+++ b/React/Base/RCTModuleMethod.h
@@ -29,7 +29,6 @@ typedef NS_ENUM(NSUInteger, RCTJavaScriptFunctionKind) {
 
 - (void)invokeWithBridge:(RCTBridge *)bridge
                   module:(id)module
-               arguments:(NSArray *)arguments
-                 context:(NSNumber *)context;
+               arguments:(NSArray *)arguments;
 
 @end
diff --git a/React/Base/RCTModuleMethod.m b/React/Base/RCTModuleMethod.m
index e56b11a8e..d13232646 100644
--- a/React/Base/RCTModuleMethod.m
+++ b/React/Base/RCTModuleMethod.m
@@ -88,7 +88,7 @@ RCT_NOT_IMPLEMENTED(-init)
     NSMutableArray *argumentBlocks = [[NSMutableArray alloc] initWithCapacity:numberOfArguments - 2];
 
 #define RCT_ARG_BLOCK(_logic) \
-  [argumentBlocks addObject:^(__unused RCTBridge *bridge, __unused NSNumber *context, NSInvocation *invocation, NSUInteger index, id json) { \
+  [argumentBlocks addObject:^(__unused RCTBridge *bridge, NSInvocation *invocation, NSUInteger index, id json) { \
     _logic \
     [invocation setArgument:&value atIndex:index]; \
   }]; \
@@ -154,7 +154,7 @@ case _value: { \
             RCT_CONVERT_CASE('^', void *)
 
             case '{': {
-              [argumentBlocks addObject:^(__unused RCTBridge *bridge, __unused NSNumber *context, NSInvocation *invocation, NSUInteger index, id json) {
+              [argumentBlocks addObject:^(__unused RCTBridge *bridge, NSInvocation *invocation, NSUInteger index, id json) {
                 NSMethodSignature *methodSignature = [RCTConvert methodSignatureForSelector:selector];
                 void *returnValue = malloc(methodSignature.methodReturnLength);
                 NSInvocation *_invocation = [NSInvocation invocationWithMethodSignature:methodSignature];
@@ -249,7 +249,6 @@ case _value: { \
 - (void)invokeWithBridge:(RCTBridge *)bridge
                   module:(id)module
                arguments:(NSArray *)arguments
-                 context:(NSNumber *)context
 {
   if (RCT_DEBUG) {
 
@@ -284,8 +283,8 @@ case _value: { \
   NSUInteger index = 0;
   for (id json in arguments) {
     id arg = RCTNilIfNull(json);
-    void (^block)(RCTBridge *, NSNumber *, NSInvocation *, NSUInteger, id) = _argumentBlocks[index];
-    block(bridge, context, invocation, index + 2, arg);
+    void (^block)(RCTBridge *, NSInvocation *, NSUInteger, id) = _argumentBlocks[index];
+    block(bridge, invocation, index + 2, arg);
     index++;
   }
 
diff --git a/React/Base/RCTRedBox.h b/React/Base/RCTRedBox.h
index 7a1f51f36..168772a91 100644
--- a/React/Base/RCTRedBox.h
+++ b/React/Base/RCTRedBox.h
@@ -13,6 +13,7 @@
 
 + (instancetype)sharedInstance;
 
+- (void)showError:(NSError *)error;
 - (void)showErrorMessage:(NSString *)message;
 - (void)showErrorMessage:(NSString *)message withDetails:(NSString *)details;
 - (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack;
diff --git a/React/Base/RCTRedBox.m b/React/Base/RCTRedBox.m
index 8e85c0ca2..a707c6532 100644
--- a/React/Base/RCTRedBox.m
+++ b/React/Base/RCTRedBox.m
@@ -283,6 +283,11 @@ RCT_NOT_IMPLEMENTED(-initWithCoder:(NSCoder *)aDecoder)
   _nextBackgroundColor = color;
 }
 
+- (void)showError:(NSError *)error
+{
+  [self showErrorMessage:error.localizedDescription withDetails:error.localizedFailureReason];
+}
+
 - (void)showErrorMessage:(NSString *)message
 {
   [self showErrorMessage:message withStack:nil showIfHidden:YES];
@@ -342,6 +347,7 @@ RCT_NOT_IMPLEMENTED(-initWithCoder:(NSCoder *)aDecoder)
 @implementation RCTRedBox
 
 + (instancetype)sharedInstance { return nil; }
+- (void)showError:(NSError *)message {}
 - (void)showErrorMessage:(NSString *)message {}
 - (void)showErrorMessage:(NSString *)message withDetails:(NSString *)details {}
 - (void)showErrorMessage:(NSString *)message withStack:(NSArray *)stack {}
diff --git a/React/Executors/RCTContextExecutor.m b/React/Executors/RCTContextExecutor.m
index 200a3f645..5fc529645 100644
--- a/React/Executors/RCTContextExecutor.m
+++ b/React/Executors/RCTContextExecutor.m
@@ -330,14 +330,13 @@ static NSError *RCTNSErrorFromJSError(JSContextRef context, JSValueRef jsError)
 - (void)executeJSCall:(NSString *)name
                method:(NSString *)method
             arguments:(NSArray *)arguments
-              context:(NSNumber *)executorID
              callback:(RCTJavaScriptCallback)onComplete
 {
   RCTAssert(onComplete != nil, @"onComplete block should not be nil");
   __weak RCTContextExecutor *weakSelf = self;
   [self executeBlockOnJavaScriptQueue:RCTProfileBlock((^{
     RCTContextExecutor *strongSelf = weakSelf;
-    if (!strongSelf || !strongSelf.isValid || ![RCTGetExecutorID(strongSelf) isEqualToNumber:executorID]) {
+    if (!strongSelf || !strongSelf.isValid) {
       return;
     }
     NSError *error;
diff --git a/React/Executors/RCTWebViewExecutor.m b/React/Executors/RCTWebViewExecutor.m
index 0d8f0ad0f..539b9e779 100644
--- a/React/Executors/RCTWebViewExecutor.m
+++ b/React/Executors/RCTWebViewExecutor.m
@@ -92,12 +92,11 @@ RCT_EXPORT_MODULE()
 - (void)executeJSCall:(NSString *)name
                method:(NSString *)method
             arguments:(NSArray *)arguments
-              context:(NSNumber *)executorID
              callback:(RCTJavaScriptCallback)onComplete
 {
   RCTAssert(onComplete != nil, @"");
   [self executeBlockOnJavaScriptQueue:^{
-    if (!self.isValid || ![RCTGetExecutorID(self) isEqualToNumber:executorID]) {
+    if (!self.isValid) {
       return;
     }
 
diff --git a/React/Modules/RCTAccessibilityManager.h b/React/Modules/RCTAccessibilityManager.h
deleted file mode 100644
index 03d22f945..000000000
--- a/React/Modules/RCTAccessibilityManager.h
+++ /dev/null
@@ -1,27 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import <Foundation/Foundation.h>
-
-#import "RCTBridgeModule.h"
-#import "RCTBridge.h"
-
-extern NSString *const RCTAccessibilityManagerDidUpdateMultiplierNotification; // posted when multiplier is changed
-
-@interface RCTAccessibilityManager : NSObject <RCTBridgeModule>
-
-@property (nonatomic, readonly) CGFloat multiplier;
-
-@end
-
-@interface RCTBridge (RCTAccessibilityManager)
-
-@property (nonatomic, readonly) RCTAccessibilityManager *accessibilityManager;
-
-@end
diff --git a/React/Modules/RCTAccessibilityManager.m b/React/Modules/RCTAccessibilityManager.m
deleted file mode 100644
index 9271b1e3d..000000000
--- a/React/Modules/RCTAccessibilityManager.m
+++ /dev/null
@@ -1,144 +0,0 @@
-/**
- * Copyright (c) 2015-present, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under the BSD-style license found in the
- * LICENSE file in the root directory of this source tree. An additional grant
- * of patent rights can be found in the PATENTS file in the same directory.
- */
-
-#import "RCTAccessibilityManager.h"
-
-#import "RCTLog.h"
-
-NSString *const RCTAccessibilityManagerDidUpdateMultiplierNotification = @"RCTAccessibilityManagerDidUpdateMultiplierNotification";
-
-@interface RCTAccessibilityManager ()
-
-@property (nonatomic, copy) NSDictionary *multipliers;
-@property (nonatomic, copy) NSString *contentSizeCategory;
-@property (nonatomic, assign) CGFloat multiplier;
-
-@end
-
-@implementation RCTAccessibilityManager
-
-@synthesize bridge = _bridge;
-
-RCT_EXPORT_MODULE()
-
-+ (NSDictionary *)JSToUIKitMap
-{
-  static NSDictionary *map = nil;
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^{
-    map = @{@"extraSmall": UIContentSizeCategoryExtraSmall,
-            @"small": UIContentSizeCategorySmall,
-            @"medium": UIContentSizeCategoryMedium,
-            @"large": UIContentSizeCategoryLarge,
-            @"extraLarge": UIContentSizeCategoryExtraLarge,
-            @"extraExtraLarge": UIContentSizeCategoryExtraExtraLarge,
-            @"extraExtraExtraLarge": UIContentSizeCategoryExtraExtraExtraLarge,
-            @"accessibilityMedium": UIContentSizeCategoryAccessibilityMedium,
-            @"accessibilityLarge": UIContentSizeCategoryAccessibilityLarge,
-            @"accessibilityExtraLarge": UIContentSizeCategoryAccessibilityExtraLarge,
-            @"accessibilityExtraExtraLarge": UIContentSizeCategoryAccessibilityExtraExtraLarge,
-            @"accessibilityExtraExtraExtraLarge": UIContentSizeCategoryAccessibilityExtraExtraExtraLarge};
-  });
-  return map;
-}
-
-+ (NSString *)UIKitCategoryFromJSCategory:(NSString *)JSCategory
-{
-  return self.JSToUIKitMap[JSCategory];
-}
-
-- (instancetype)init
-{
-  self = [super init];
-  if (self) {
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(didReceiveNewContentSizeCategory:)
-                                                 name:UIContentSizeCategoryDidChangeNotification
-                                               object:[UIApplication sharedApplication]];
-    self.contentSizeCategory = [[UIApplication sharedApplication] preferredContentSizeCategory];
-  }
-  return self;
-}
-
-- (void)dealloc
-{
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-}
-
-- (void)didReceiveNewContentSizeCategory:(NSNotification *)note
-{
-  self.contentSizeCategory = note.userInfo[UIContentSizeCategoryNewValueKey];
-}
-
-- (void)setContentSizeCategory:(NSString *)contentSizeCategory
-{
-  if (_contentSizeCategory != contentSizeCategory) {
-    _contentSizeCategory = [contentSizeCategory copy];
-    self.multiplier = [self multiplierForContentSizeCategory:_contentSizeCategory];
-    [[NSNotificationCenter defaultCenter] postNotificationName:RCTAccessibilityManagerDidUpdateMultiplierNotification object:self];
-  }
-}
-
-- (CGFloat)multiplierForContentSizeCategory:(NSString *)category
-{
-  NSNumber *m = self.multipliers[category];
-  if (m.doubleValue <= 0.0) {
-    RCTLogError(@"Can't determinte multiplier for category %@. Using 1.0.", category);
-    m = @1.0;
-  }
-  return m.doubleValue;
-}
-
-- (NSDictionary *)multipliers
-{
-  if (_multipliers == nil) {
-    _multipliers = @{UIContentSizeCategoryExtraSmall: @0.823,
-                     UIContentSizeCategorySmall: @0.882,
-                     UIContentSizeCategoryMedium: @0.941,
-                     UIContentSizeCategoryLarge: @1.0,
-                     UIContentSizeCategoryExtraLarge: @1.118,
-                     UIContentSizeCategoryExtraExtraLarge: @1.235,
-                     UIContentSizeCategoryExtraExtraExtraLarge: @1.353,
-                     UIContentSizeCategoryAccessibilityMedium: @1.786,
-                     UIContentSizeCategoryAccessibilityLarge: @2.143,
-                     UIContentSizeCategoryAccessibilityExtraLarge: @2.643,
-                     UIContentSizeCategoryAccessibilityExtraExtraLarge: @3.143,
-                     UIContentSizeCategoryAccessibilityExtraExtraExtraLarge: @3.571};
-  }
-  return _multipliers;
-}
-
-RCT_EXPORT_METHOD(setAccessibilityContentSizeMultipliers:(NSDictionary *)JSMultipliers)
-{
-  NSMutableDictionary *multipliers = [[NSMutableDictionary alloc] init];
-  for (NSString *__nonnull JSCategory in JSMultipliers) {
-    NSNumber *m = JSMultipliers[JSCategory];
-    NSString *UIKitCategory = [self.class UIKitCategoryFromJSCategory:JSCategory];
-    multipliers[UIKitCategory] = m;
-  }
-  self.multipliers = multipliers;
-}
-
-RCT_EXPORT_METHOD(getMultiplier:(RCTResponseSenderBlock)callback)
-{
-  if (callback) {
-    callback(@[ @(self.multiplier) ]);
-  }
-}
-
-@end
-
-@implementation RCTBridge (RCTAccessibilityManager)
-
-- (RCTAccessibilityManager *)accessibilityManager
-{
-  return self.modules[RCTBridgeModuleNameForClass([RCTAccessibilityManager class])];
-}
-
-@end
diff --git a/React/Modules/RCTExceptionsManager.m b/React/Modules/RCTExceptionsManager.m
index 2894fac2c..b353420f8 100644
--- a/React/Modules/RCTExceptionsManager.m
+++ b/React/Modules/RCTExceptionsManager.m
@@ -48,7 +48,8 @@ RCT_EXPORT_METHOD(reportSoftException:(NSString *)message
 }
 
 RCT_EXPORT_METHOD(reportFatalException:(NSString *)message
-                  stack:(NSArray *)stack)
+                  stack:(NSArray *)stack
+                  exceptionId:(__unused NSNumber *)exceptionId)
 {
   if (_delegate) {
     [_delegate handleFatalJSExceptionWithMessage:message stack:stack];
@@ -86,7 +87,8 @@ RCT_EXPORT_METHOD(reportFatalException:(NSString *)message
 }
 
 RCT_EXPORT_METHOD(updateExceptionMessage:(NSString *)message
-                  stack:(NSArray *)stack)
+                  stack:(NSArray *)stack
+                  exceptionId:(__unused NSNumber *)exceptionId)
 {
   if (_delegate) {
     [_delegate updateJSExceptionWithMessage:message stack:stack];
@@ -100,6 +102,6 @@ RCT_EXPORT_METHOD(updateExceptionMessage:(NSString *)message
 RCT_EXPORT_METHOD(reportUnhandledException:(NSString *)message
                   stack:(NSArray *)stack)
 {
-  [self reportFatalException:message stack:stack];
+  [self reportFatalException:message stack:stack exceptionId:nil];
 }
 @end
diff --git a/React/Modules/RCTUIManager.h b/React/Modules/RCTUIManager.h
index 1efedc510..cbd7c167f 100644
--- a/React/Modules/RCTUIManager.h
+++ b/React/Modules/RCTUIManager.h
@@ -14,12 +14,6 @@
 #import "RCTInvalidating.h"
 #import "RCTViewManager.h"
 
-/**
- * Posted right before re-render happens. This is a chance for views to invalidate their state so
- * next render cycle will pick up updated views and layout appropriately.
- */
-extern NSString *const RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification;
-
 @protocol RCTScrollableProtocol;
 
 /**
diff --git a/React/Modules/RCTUIManager.m b/React/Modules/RCTUIManager.m
index 39cd38a21..0b3c2c043 100644
--- a/React/Modules/RCTUIManager.m
+++ b/React/Modules/RCTUIManager.m
@@ -14,7 +14,6 @@
 #import <AVFoundation/AVFoundation.h>
 
 #import "Layout.h"
-#import "RCTAccessibilityManager.h"
 #import "RCTAnimationType.h"
 #import "RCTAssert.h"
 #import "RCTBridge.h"
@@ -36,8 +35,6 @@
 static void RCTTraverseViewNodes(id<RCTViewNodeProtocol> view, void (^block)(id<RCTViewNodeProtocol>));
 static NSDictionary *RCTPropsMerge(NSDictionary *beforeProps, NSDictionary *newProps);
 
-NSString *const RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification = @"RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification";
-
 @interface RCTAnimation : NSObject
 
 @property (nonatomic, readonly) NSTimeInterval duration;
@@ -265,33 +262,10 @@ static NSDictionary *RCTViewConfigForModule(Class managerClass)
     _rootViewTags = [[NSMutableSet alloc] init];
 
     _bridgeTransactionListeners = [[NSMutableSet alloc] init];
-
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(didReceiveNewContentSizeMultiplier)
-                                                 name:RCTAccessibilityManagerDidUpdateMultiplierNotification
-                                               object:nil];
   }
   return self;
 }
 
-- (void)dealloc
-{
-  [[NSNotificationCenter defaultCenter] removeObserver:self];
-}
-
-- (void)didReceiveNewContentSizeMultiplier
-{
-  __weak RCTUIManager *weakSelf = self;
-  dispatch_async(self.methodQueue, ^{
-    __weak RCTUIManager *strongSelf = weakSelf;
-    if (strongSelf) {
-      [[NSNotificationCenter defaultCenter] postNotificationName:RCTUIManagerWillUpdateViewsDueToContentSizeMultiplierChangeNotification
-                                                          object:strongSelf];
-      [strongSelf batchDidComplete];
-    }
-  });
-}
-
 - (BOOL)isValid
 {
   return _viewRegistry != nil;
@@ -1351,7 +1325,9 @@ RCT_EXPORT_METHOD(measure:(NSNumber *)reactTag
   [self addUIBlock:^(__unused RCTUIManager *uiManager, RCTSparseArray *viewRegistry) {
     UIView *view = viewRegistry[reactTag];
     if (!view) {
-      RCTLogError(@"measure cannot find view with tag #%@", reactTag);
+      // this view was probably collapsed out
+      RCTLogWarn(@"measure cannot find view with tag #%@", reactTag);
+      callback(@[]);
       return;
     }
     CGRect frame = view.frame;
diff --git a/React/React.xcodeproj/project.pbxproj b/React/React.xcodeproj/project.pbxproj
index d0bbda232..1e193d9b2 100644
--- a/React/React.xcodeproj/project.pbxproj
+++ b/React/React.xcodeproj/project.pbxproj
@@ -64,7 +64,6 @@
 		58114A501AAE93D500E7D092 /* RCTAsyncLocalStorage.m in Sources */ = {isa = PBXBuildFile; fileRef = 58114A4E1AAE93D500E7D092 /* RCTAsyncLocalStorage.m */; };
 		58C571C11AA56C1900CDF9C8 /* RCTDatePickerManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 58C571BF1AA56C1900CDF9C8 /* RCTDatePickerManager.m */; };
 		63F014C01B02080B003B75D2 /* RCTPointAnnotation.m in Sources */ = {isa = PBXBuildFile; fileRef = 63F014BF1B02080B003B75D2 /* RCTPointAnnotation.m */; };
-		783ABB351B38A9D3003FFD95 /* RCTJavaScriptExecutor.m in Sources */ = {isa = PBXBuildFile; fileRef = 783ABB341B38A9D3003FFD95 /* RCTJavaScriptExecutor.m */; };
 		830A229E1A66C68A008503DA /* RCTRootView.m in Sources */ = {isa = PBXBuildFile; fileRef = 830A229D1A66C68A008503DA /* RCTRootView.m */; };
 		832348161A77A5AA00B55238 /* Layout.c in Sources */ = {isa = PBXBuildFile; fileRef = 13B07FC71A68125100A75B9A /* Layout.c */; };
 		83CBBA511A601E3B00E9B192 /* RCTAssert.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBA4B1A601E3B00E9B192 /* RCTAssert.m */; };
@@ -75,7 +74,6 @@
 		83CBBA691A601EF300E9B192 /* RCTEventDispatcher.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBA661A601EF300E9B192 /* RCTEventDispatcher.m */; };
 		83CBBA981A6020BB00E9B192 /* RCTTouchHandler.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBA971A6020BB00E9B192 /* RCTTouchHandler.m */; };
 		83CBBACC1A6023D300E9B192 /* RCTConvert.m in Sources */ = {isa = PBXBuildFile; fileRef = 83CBBACB1A6023D300E9B192 /* RCTConvert.m */; };
-		E9B20B7B1B500126007A2DA7 /* RCTAccessibilityManager.m in Sources */ = {isa = PBXBuildFile; fileRef = E9B20B7A1B500126007A2DA7 /* RCTAccessibilityManager.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -214,7 +212,6 @@
 		58C571C01AA56C1900CDF9C8 /* RCTDatePickerManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTDatePickerManager.h; sourceTree = "<group>"; };
 		63F014BE1B02080B003B75D2 /* RCTPointAnnotation.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTPointAnnotation.h; sourceTree = "<group>"; };
 		63F014BF1B02080B003B75D2 /* RCTPointAnnotation.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTPointAnnotation.m; sourceTree = "<group>"; };
-		783ABB341B38A9D3003FFD95 /* RCTJavaScriptExecutor.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTJavaScriptExecutor.m; sourceTree = "<group>"; };
 		830213F31A654E0800B993E6 /* RCTBridgeModule.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RCTBridgeModule.h; sourceTree = "<group>"; };
 		830A229C1A66C68A008503DA /* RCTRootView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTRootView.h; sourceTree = "<group>"; };
 		830A229D1A66C68A008503DA /* RCTRootView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTRootView.m; sourceTree = "<group>"; };
@@ -240,8 +237,6 @@
 		83CBBACA1A6023D300E9B192 /* RCTConvert.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTConvert.h; sourceTree = "<group>"; };
 		83CBBACB1A6023D300E9B192 /* RCTConvert.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTConvert.m; sourceTree = "<group>"; };
 		E3BBC8EB1ADE6F47001BBD81 /* RCTTextDecorationLineType.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = RCTTextDecorationLineType.h; sourceTree = "<group>"; };
-		E9B20B791B500126007A2DA7 /* RCTAccessibilityManager.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RCTAccessibilityManager.h; sourceTree = "<group>"; };
-		E9B20B7A1B500126007A2DA7 /* RCTAccessibilityManager.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = RCTAccessibilityManager.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -278,8 +273,6 @@
 		13B07FE01A69315300A75B9A /* Modules */ = {
 			isa = PBXGroup;
 			children = (
-				E9B20B791B500126007A2DA7 /* RCTAccessibilityManager.h */,
-				E9B20B7A1B500126007A2DA7 /* RCTAccessibilityManager.m */,
 				13B07FE71A69327A00A75B9A /* RCTAlertManager.h */,
 				13B07FE81A69327A00A75B9A /* RCTAlertManager.m */,
 				1372B7081AB030C200659ED6 /* RCTAppState.h */,
@@ -436,7 +429,6 @@
 				14C2CA751B3AC64F00E6CBB2 /* RCTFrameUpdate.m */,
 				83CBBA4C1A601E3B00E9B192 /* RCTInvalidating.h */,
 				83CBBA631A601ECA00E9B192 /* RCTJavaScriptExecutor.h */,
-				783ABB341B38A9D3003FFD95 /* RCTJavaScriptExecutor.m */,
 				14200DA81AC179B3008EE6BA /* RCTJavaScriptLoader.h */,
 				14200DA91AC179B3008EE6BA /* RCTJavaScriptLoader.m */,
 				13A1F71C1A75392D00D3D453 /* RCTKeyCommands.h */,
@@ -572,13 +564,11 @@
 				137327EA1AA5CF210034F82E /* RCTTabBarManager.m in Sources */,
 				13B080261A694A8400A75B9A /* RCTWrapperViewController.m in Sources */,
 				13B080051A6947C200A75B9A /* RCTScrollView.m in Sources */,
-				E9B20B7B1B500126007A2DA7 /* RCTAccessibilityManager.m in Sources */,
 				13B07FF21A69327A00A75B9A /* RCTTiming.m in Sources */,
 				1372B70A1AB030C200659ED6 /* RCTAppState.m in Sources */,
 				134FCB3D1A6E7F0800051CC8 /* RCTContextExecutor.m in Sources */,
 				14C2CA781B3ACB0400E6CBB2 /* RCTBatchedBridge.m in Sources */,
 				13E067591A70F44B002CDEE1 /* UIView+React.m in Sources */,
-				783ABB351B38A9D3003FFD95 /* RCTJavaScriptExecutor.m in Sources */,
 				14F484561AABFCE100FDF6B9 /* RCTSliderManager.m in Sources */,
 				14C2CA741B3AC64300E6CBB2 /* RCTModuleData.m in Sources */,
 				142014191B32094000CC17BA /* RCTPerformanceLogger.m in Sources */,
diff --git a/React/Views/RCTViewManager.m b/React/Views/RCTViewManager.m
index ce027bbed..9be9087f6 100644
--- a/React/Views/RCTViewManager.m
+++ b/React/Views/RCTViewManager.m
@@ -96,6 +96,7 @@ RCT_EXPORT_VIEW_PROPERTY(accessibilityTraits, UIAccessibilityTraits)
 RCT_EXPORT_VIEW_PROPERTY(backgroundColor, UIColor)
 RCT_REMAP_VIEW_PROPERTY(accessible, isAccessibilityElement, BOOL)
 RCT_REMAP_VIEW_PROPERTY(testID, accessibilityIdentifier, NSString)
+RCT_REMAP_VIEW_PROPERTY(backfaceVisibility, layer.doubleSided, css_backface_visibility_t)
 RCT_REMAP_VIEW_PROPERTY(opacity, alpha, CGFloat)
 RCT_REMAP_VIEW_PROPERTY(shadowColor, layer.shadowColor, CGColor);
 RCT_REMAP_VIEW_PROPERTY(shadowOffset, layer.shadowOffset, CGSize);
diff --git a/package.json b/package.json
index c70eda5e0..39f03c656 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-native",
-  "version": "0.6.0",
+  "version": "0.8.0",
   "description": "A framework for building native apps using React",
   "license": "BSD-3-Clause",
   "repository": {
diff --git a/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js b/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
index 42c1a485f..e05575db7 100644
--- a/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
+++ b/packager/react-packager/src/DependencyResolver/DependencyGraph/index.js
@@ -150,7 +150,16 @@ class DependencyGraph {
 
   getOrderedDependencies(entryPath) {
     return this.load().then(() => {
-      const absolutePath = path.resolve(this._getAbsolutePath(entryPath));
+      const absPath = this._getAbsolutePath(entryPath);
+
+      if (absPath == null) {
+        throw new NotFoundError(
+          'Could not find source file at %s',
+          entryPath
+        );
+      }
+
+      const absolutePath = path.resolve(absPath);
 
       if (absolutePath == null) {
         throw new NotFoundError(