diff --git a/element/index.js b/element/index.js
index e35c715b077386..bc5abe635ee8c2 100644
--- a/element/index.js
+++ b/element/index.js
@@ -1,7 +1,7 @@
 /**
  * External dependencies
  */
-import { createElement, Component, cloneElement, Children, Fragment } from 'react';
+import { createContext, createElement, Component, cloneElement, Children, Fragment } from 'react';
 import { render, findDOMNode, createPortal, unmountComponentAtNode } from 'react-dom';
 import { renderToStaticMarkup } from 'react-dom/server';
 import {
@@ -71,6 +71,15 @@ export { Children };
  */
 export { Fragment };
 
+/**
+ * Creates a context object containing two components: a provider and consumer.
+ *
+ * @param {object} defaultValue Data stored in the context.
+ *
+ * @return {Object} Context object.
+ */
+export { createContext };
+
 /**
  * Creates a portal into which a component can be rendered.
  *
diff --git a/lib/client-assets.php b/lib/client-assets.php
index f3ff9e23a4a113..2fd91792ce7f09 100644
--- a/lib/client-assets.php
+++ b/lib/client-assets.php
@@ -345,16 +345,16 @@ function gutenberg_register_vendor_scripts() {
 
 	gutenberg_register_vendor_script(
 		'react',
-		'https://unpkg.com/react@16.2.0/umd/react' . $react_suffix . '.js'
+		'https://unpkg.com/react@16.3.0-alpha.1/umd/react' . $react_suffix . '.js'
 	);
 	gutenberg_register_vendor_script(
 		'react-dom',
-		'https://unpkg.com/react-dom@16.2.0/umd/react-dom' . $react_suffix . '.js',
+		'https://unpkg.com/react-dom@16.3.0-alpha.1/umd/react-dom' . $react_suffix . '.js',
 		array( 'react' )
 	);
 	gutenberg_register_vendor_script(
 		'react-dom-server',
-		'https://unpkg.com/react-dom@16.2.0/umd/react-dom-server.browser' . $react_suffix . '.js',
+		'https://unpkg.com/react-dom@16.3.0-alpha.1/umd/react-dom-server.browser' . $react_suffix . '.js',
 		array( 'react' )
 	);
 	$moment_script = SCRIPT_DEBUG ? 'moment.js' : 'min/moment.min.js';
diff --git a/package-lock.json b/package-lock.json
index a6a22906854f10..9a76bf81da1b12 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9860,9 +9860,9 @@
       "integrity": "sha512-6YpsC4JFT7zVG8/8gIXxdnrlHdz64/H7dpjHgXNCy5kwy2DIG1dVbdgASNUTwy4AaHgI8rvjJJzr2BxZAVu/3Q=="
     },
     "react": {
-      "version": "16.2.0",
-      "resolved": "https://registry.npmjs.org/react/-/react-16.2.0.tgz",
-      "integrity": "sha512-ZmIomM7EE1DvPEnSFAHZn9Vs9zJl5A9H7el0EGTE6ZbW9FKe/14IYAlPbC8iH25YarEQxZL+E8VW7Mi7kfQrDQ==",
+      "version": "16.3.0-alpha.1",
+      "resolved": "https://registry.npmjs.org/react/-/react-16.3.0-alpha.1.tgz",
+      "integrity": "sha512-ukD/yaNKHAZLYMAHuwvIdxlb1HQovrRxmrQDHw2MNxyKlOoELJzMUdFh8bsLwheV05zqQ5nHbL5zEuVjcH3nwA==",
       "requires": {
         "fbjs": "0.8.16",
         "loose-envify": "1.3.1",
@@ -9958,9 +9958,9 @@
       }
     },
     "react-dom": {
-      "version": "16.2.0",
-      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.2.0.tgz",
-      "integrity": "sha512-zpGAdwHVn9K0091d+hr+R0qrjoJ84cIBFL2uU60KvWBPfZ7LPSrfqviTxGHWN0sjPZb2hxWzMexwrvJdKePvjg==",
+      "version": "16.3.0-alpha.1",
+      "resolved": "https://registry.npmjs.org/react-dom/-/react-dom-16.3.0-alpha.1.tgz",
+      "integrity": "sha512-1HYvdyslO5D0d6C1mGqzyz7V+wzjLcUcj14a7DEEseV3eEn6fPvq4wAGHguG+QbXHkelrrkxh2sgLr/vFA0UYA==",
       "requires": {
         "fbjs": "0.8.16",
         "loose-envify": "1.3.1",
diff --git a/package.json b/package.json
index 1ff669f6d8d956..85336b69f59ea5 100644
--- a/package.json
+++ b/package.json
@@ -39,12 +39,12 @@
 		"prop-types": "15.5.10",
 		"querystringify": "1.0.0",
 		"re-resizable": "4.0.3",
-		"react": "16.2.0",
+		"react": "16.3.0-alpha.1",
 		"react-autosize-textarea": "2.0.0",
 		"react-click-outside": "2.3.1",
 		"react-color": "2.13.4",
 		"react-datepicker": "0.61.0",
-		"react-dom": "16.2.0",
+		"react-dom": "16.3.0-alpha.1",
 		"react-redux": "5.0.6",
 		"redux": "3.7.2",
 		"redux-multi": "0.1.12",