diff --git a/.flowconfig b/.flowconfig
index ca1e816a28f..2adb896a567 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -13,6 +13,7 @@
 
 ; Ignore unexpected extra "@providesModule"
 .*/node_modules/.*/node_modules/fbjs/.*
++.*/node_modules/react-dom/.*
 
 ; Ignore duplicate module providers
 ; For RN Apps installed via npm, "Libraries" folder is inside
diff --git a/Examples/UIExplorer/android/app/src/main/AndroidManifest.xml b/Examples/UIExplorer/android/app/src/main/AndroidManifest.xml
index 308604da538..ddad36d2191 100644
--- a/Examples/UIExplorer/android/app/src/main/AndroidManifest.xml
+++ b/Examples/UIExplorer/android/app/src/main/AndroidManifest.xml
@@ -10,6 +10,7 @@
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
   <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
   <uses-permission android:name="android.permission.VIBRATE"/>
+  <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
 
   <!--Just to show permissions example-->
   <uses-permission android:name="android.permission.CAMERA"/>
diff --git a/Examples/UIExplorer/js/CameraRollView.js b/Examples/UIExplorer/js/CameraRollView.js
index 8bb9fbd2b07..5ffca8e0da9 100644
--- a/Examples/UIExplorer/js/CameraRollView.js
+++ b/Examples/UIExplorer/js/CameraRollView.js
@@ -27,9 +27,11 @@ var React = require('react');
 var ReactNative = require('react-native');
 var {
   ActivityIndicator,
+  Alert,
   CameraRoll,
   Image,
   ListView,
+  PermissionsAndroid,
   Platform,
   StyleSheet,
   View,
@@ -137,13 +139,27 @@ var CameraRollView = React.createClass({
     }
   },
 
-  _fetch: function(clear?: boolean) {
+  _fetch: async function(clear?: boolean) {
     if (clear) {
       this.setState(this.getInitialState(), this.fetch);
       return;
     }
 
-    var fetchParams: Object = {
+    if (Platform.OS === 'android') {
+      const result = await PermissionsAndroid.request(
+        PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE,
+        {
+          title: 'Permission Explanation',
+          message: 'UIExplorer would like to access your pictures.',
+        },
+      );
+      if (result !== 'granted') {
+        Alert.alert('Access to pictures was denied.');
+        return;
+      }
+    }
+
+    const fetchParams: Object = {
       first: this.props.batchSize,
       groupTypes: this.props.groupTypes,
       assetType: this.props.assetType,
@@ -156,8 +172,12 @@ var CameraRollView = React.createClass({
       fetchParams.after = this.state.lastCursor;
     }
 
-    CameraRoll.getPhotos(fetchParams)
-      .then((data) => this._appendAssets(data), (e) => logError(e));
+    try {
+      const data = await CameraRoll.getPhotos(fetchParams);
+      this._appendAssets(data);
+    } catch (e) {
+      logError(e);
+    }
   },
 
   /**
@@ -178,6 +198,7 @@ var CameraRollView = React.createClass({
         onEndReached={this._onEndReached}
         style={styles.container}
         dataSource={this.state.dataSource}
+        enableEmptySections
       />
     );
   },
diff --git a/Libraries/CameraRoll/CameraRoll.js b/Libraries/CameraRoll/CameraRoll.js
index 581989684c0..54d9ae70802 100644
--- a/Libraries/CameraRoll/CameraRoll.js
+++ b/Libraries/CameraRoll/CameraRoll.js
@@ -11,7 +11,8 @@
  */
 'use strict';
 
-var ReactPropTypes = require('React').PropTypes
+// $FlowFixMe `checkPropTypes` is not in Flow's built in React typedefs yet.
+var {PropTypes, checkPropTypes} = require('React');
 var RCTCameraRollManager = require('NativeModules').CameraRollManager;
 
 var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
@@ -47,64 +48,65 @@ var getPhotosParamChecker = createStrictShapeTypeChecker({
    * The number of photos wanted in reverse order of the photo application
    * (i.e. most recent first for SavedPhotos).
    */
-  first: ReactPropTypes.number.isRequired,
+  first: PropTypes.number.isRequired,
 
   /**
    * A cursor that matches `page_info { end_cursor }` returned from a previous
    * call to `getPhotos`
    */
-  after: ReactPropTypes.string,
+  after: PropTypes.string,
 
   /**
    * Specifies which group types to filter the results to.
    */
-  groupTypes: ReactPropTypes.oneOf(GROUP_TYPES_OPTIONS),
+  groupTypes: PropTypes.oneOf(GROUP_TYPES_OPTIONS),
 
   /**
    * Specifies filter on group names, like 'Recent Photos' or custom album
    * titles.
    */
-  groupName: ReactPropTypes.string,
+  groupName: PropTypes.string,
 
   /**
   * Specifies filter on asset type
   */
-  assetType: ReactPropTypes.oneOf(ASSET_TYPE_OPTIONS),
+  assetType: PropTypes.oneOf(ASSET_TYPE_OPTIONS),
 
   /**
    * Filter by mimetype (e.g. image/jpeg).
    */
-  mimeTypes: ReactPropTypes.arrayOf(ReactPropTypes.string),
+  mimeTypes: PropTypes.arrayOf(PropTypes.string),
 });
 
 /**
  * Shape of the return value of the `getPhotos` function.
  */
 var getPhotosReturnChecker = createStrictShapeTypeChecker({
-  edges: ReactPropTypes.arrayOf(createStrictShapeTypeChecker({
+  // $FlowFixMe(>=0.41.0)
+  edges: PropTypes.arrayOf(createStrictShapeTypeChecker({
     node: createStrictShapeTypeChecker({
-      type: ReactPropTypes.string.isRequired,
-      group_name: ReactPropTypes.string.isRequired,
+      type: PropTypes.string.isRequired,
+      group_name: PropTypes.string.isRequired,
       image: createStrictShapeTypeChecker({
-        uri: ReactPropTypes.string.isRequired,
-        height: ReactPropTypes.number.isRequired,
-        width: ReactPropTypes.number.isRequired,
-        isStored: ReactPropTypes.bool,
+        uri: PropTypes.string.isRequired,
+        height: PropTypes.number.isRequired,
+        width: PropTypes.number.isRequired,
+        isStored: PropTypes.bool,
       }).isRequired,
-      timestamp: ReactPropTypes.number.isRequired,
+      timestamp: PropTypes.number.isRequired,
       location: createStrictShapeTypeChecker({
-        latitude: ReactPropTypes.number,
-        longitude: ReactPropTypes.number,
-        altitude: ReactPropTypes.number,
-        heading: ReactPropTypes.number,
-        speed: ReactPropTypes.number,
+        latitude: PropTypes.number,
+        longitude: PropTypes.number,
+        altitude: PropTypes.number,
+        heading: PropTypes.number,
+        speed: PropTypes.number,
       }),
     }).isRequired,
   })).isRequired,
   page_info: createStrictShapeTypeChecker({
-    has_next_page: ReactPropTypes.bool.isRequired,
-    start_cursor: ReactPropTypes.string,
-    end_cursor: ReactPropTypes.string,
+    has_next_page: PropTypes.bool.isRequired,
+    start_cursor: PropTypes.string,
+    end_cursor: PropTypes.string,
   }).isRequired,
 });
 
@@ -213,7 +215,7 @@ class CameraRoll {
    */
   static getPhotos(params) {
     if (__DEV__) {
-      getPhotosParamChecker({params}, 'params', 'CameraRoll.getPhotos');
+      checkPropTypes({params: getPhotosParamChecker}, {params}, 'params', 'CameraRoll.getPhotos');
     }
     if (arguments.length > 1) {
       console.warn('CameraRoll.getPhotos(tag, success, error) is deprecated.  Use the returned Promise instead');
@@ -221,7 +223,8 @@ class CameraRoll {
       if (__DEV__) {
         const callback = arguments[1];
         successCallback = (response) => {
-          getPhotosReturnChecker(
+          checkPropTypes(
+            {response: getPhotosReturnChecker},
             {response},
             'response',
             'CameraRoll.getPhotos callback'
diff --git a/Libraries/LayoutAnimation/LayoutAnimation.js b/Libraries/LayoutAnimation/LayoutAnimation.js
index 61d62601d71..a6670cab2f2 100644
--- a/Libraries/LayoutAnimation/LayoutAnimation.js
+++ b/Libraries/LayoutAnimation/LayoutAnimation.js
@@ -11,12 +11,13 @@
  */
 'use strict';
 
-var {PropTypes} = require('React');
 var UIManager = require('UIManager');
 
-var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
 var keyMirror = require('fbjs/lib/keyMirror');
 
+// $FlowFixMe checkPropTypes not yet landed to Flow
+var {checkPropTypes, PropTypes} = require('react');
+
 var TypesEnum = {
   spring: true,
   linear: true,
@@ -33,7 +34,7 @@ var PropertiesEnum = {
 };
 var Properties = keyMirror(PropertiesEnum);
 
-var animChecker = createStrictShapeTypeChecker({
+var animType = PropTypes.shape({
   duration: PropTypes.number,
   delay: PropTypes.number,
   springDamping: PropTypes.number,
@@ -55,11 +56,11 @@ type Anim = {
   property?: $Enum<typeof PropertiesEnum>,
 }
 
-var configChecker = createStrictShapeTypeChecker({
+var configType = PropTypes.shape({
   duration: PropTypes.number.isRequired,
-  create: animChecker,
-  update: animChecker,
-  delete: animChecker,
+  create: animType,
+  update: animType,
+  delete: animType,
 });
 
 type Config = {
@@ -69,9 +70,13 @@ type Config = {
   delete?: Anim,
 }
 
+function checkConfig(config: Config, location: string, name: string) {
+  checkPropTypes({config: configType}, {config}, location, name);
+}
+
 function configureNext(config: Config, onAnimationDidEnd?: Function) {
   if (__DEV__) {
-    configChecker({config}, 'config', 'LayoutAnimation.configureNext');
+    checkConfig(config, 'config', 'LayoutAnimation.configureNext');
   }
   UIManager.configureNextLayoutAnimation(
     config, onAnimationDidEnd || function() {}, function() { /* unused */ }
@@ -151,7 +156,7 @@ var LayoutAnimation = {
   create,
   Types,
   Properties,
-  configChecker: configChecker,
+  checkConfig,
   Presets,
   easeInEaseOut: configureNext.bind(
     null, Presets.easeInEaseOut