diff --git a/wp-admin/about.php b/wp-admin/about.php
index 077027817b..3fa52e7912 100644
--- a/wp-admin/about.php
+++ b/wp-admin/about.php
@@ -52,9 +52,11 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 	<div class="feature-section">
 		<h4><?php _e( 'Flexible Sizes' ); ?></h4>
 		<p><?php _e( 'You can decide for yourself how tall or wide your custom header image should be. From now on, themes will provide a recommended image size for custom headers rather than a fixed requirement. Note: this feature requires <a href="http://codex.wordpress.org/Custom_Headers">theme support</a>.' ); ?></p>
-		<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-1.png' ) ); ?>" class="image-30" />
-		<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-2.png' ) ); ?>" class="image-30" />
-		<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-3.png' ) ); ?>" class="image-30" />
+		<div class="three-col-images">
+			<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-1.png' ) ); ?>" class="image-30 first-feature" />
+			<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-2.png' ) ); ?>" class="image-30" />
+			<img src="<?php echo esc_url( admin_url( 'images/screenshots/flex-header-3.png' ) ); ?>" class="image-30 last-feature" />
+		</div>
 	</div>
 
 	<div class="feature-section images-stagger-right">
@@ -64,6 +66,20 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 	</div>
 </div>
 
+<div class="changelog">
+	<h3><?php _e( 'Twitter Embeds' ); ?></h3>
+
+	<div class="feature-section images-stagger-right">
+		<img src="<?php echo esc_url( admin_url( 'images/screenshots/twitter-embed-1.png' ) ); ?>" class="image-30" />
+		<img src="<?php echo esc_url( admin_url( 'images/screenshots/twitter-embed-2.png' ) ); ?>" class="image-30" />
+		<h4><?php _e( 'Share Tweets with Style' ); ?></h4>
+		<p><?php _e( 'You can now embed individual tweets in posts. It includes action links that allow readers to reply to, retweet, and favorite the tweet without leaving your site. Just paste a tweet URL on its own line.' ); ?></p>
+		<p><?php printf( __( 'This works with URLs from some other sites, too. For more, see the Codex article on <a href="%s">Embeds</a>.' ), __( 'http://codex.wordpress.org/Embeds' ) ); ?></p>
+	</div>
+
+</div>
+
+
 <div class="changelog">
 	<h3><?php _e( 'Better Captions' ); ?></h3>
 
diff --git a/wp-admin/css/colors-classic.dev.css b/wp-admin/css/colors-classic.dev.css
index 0d9b43f913..b70e35df92 100644
--- a/wp-admin/css/colors-classic.dev.css
+++ b/wp-admin/css/colors-classic.dev.css
@@ -2360,11 +2360,11 @@ div.widgets-sortables,
 
 .about-wrap .feature-section img {
 	background: #fff;
-	border-color: #dfdfdf;
+	border: 1px #ccc solid;
 
-	-moz-box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
-	-webkit-box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
-	box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
+	-moz-box-shadow:    0 1px 3px rgba( 0, 0, 0, 0.3 );
+	-webkit-box-shadow: 0 1px 3px rgba( 0, 0, 0, 0.3 );
+	box-shadow:         0 1px 3px rgba( 0, 0, 0, 0.3 );
 }
 
 .about-wrap .point-releases {
diff --git a/wp-admin/css/colors-fresh.dev.css b/wp-admin/css/colors-fresh.dev.css
index 2b77701821..8049099e6c 100644
--- a/wp-admin/css/colors-fresh.dev.css
+++ b/wp-admin/css/colors-fresh.dev.css
@@ -1947,11 +1947,11 @@ div.widgets-sortables,
 
 .about-wrap .feature-section img {
 	background: #fff;
-	border-color: #dfdfdf;
+	border: 1px #ccc solid;
 
-	-moz-box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
-	-webkit-box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
-	box-shadow: 0 0 6px rgba( 0, 0, 0, 0.3 );
+	-moz-box-shadow:    0 1px 3px rgba( 0, 0, 0, 0.3 );
+	-webkit-box-shadow: 0 1px 3px rgba( 0, 0, 0, 0.3 );
+	box-shadow:         0 1px 3px rgba( 0, 0, 0, 0.3 );
 }
 
 .about-wrap h4.wp-people-group {
diff --git a/wp-admin/css/ie.dev.css b/wp-admin/css/ie.dev.css
index 47f8605fac..8178971f5d 100644
--- a/wp-admin/css/ie.dev.css
+++ b/wp-admin/css/ie.dev.css
@@ -439,6 +439,15 @@ table.ie-fixed {
 	margin: 0;
 }
 
+.about-wrap .three-col-images img {
+	margin: 0 0.6% 10px;
+}
+
+.about-wrap .three-col-images .last-feature,
+.about-wrap .three-col-images .first-feature {
+	float: none;
+}
+
 /* IE6 leftovers */
 * html .row-actions {
 	visibility: visible;
diff --git a/wp-admin/css/wp-admin-rtl.dev.css b/wp-admin/css/wp-admin-rtl.dev.css
index fbd54e8dde..06ee2ece89 100644
--- a/wp-admin/css/wp-admin-rtl.dev.css
+++ b/wp-admin/css/wp-admin-rtl.dev.css
@@ -1403,6 +1403,14 @@ h2 .nav-tab {
 	margin-right: 3em;
 }
 
+.about-wrap .three-col-images .last-feature {
+	float: left;
+}
+
+.about-wrap .three-col-images .first-feature {
+	float: right;
+}
+
 .about-wrap .feature-section.three-col div {
 	margin-right: 0;
 	margin-left: 4.999999999%;
diff --git a/wp-admin/css/wp-admin.dev.css b/wp-admin/css/wp-admin.dev.css
index 5030185eeb..4eed67961f 100644
--- a/wp-admin/css/wp-admin.dev.css
+++ b/wp-admin/css/wp-admin.dev.css
@@ -5076,7 +5076,7 @@ input.button-highlighted,
 
 .about-wrap .feature-section img {
 	border: none;
-	margin: 0 0.7% 10px 0;
+	margin: 0 1.94% 10px 0;
 	-webkit-border-radius: 3px;
 	border-radius: 3px;
 }
@@ -5086,7 +5086,7 @@ input.button-highlighted,
 }
 
 .about-wrap .feature-section img.image-30 {
-	max-width: 32%;
+	max-width: 31.2381%;
 }
 
 .ie8 .about-wrap .feature-section img {
@@ -5123,6 +5123,22 @@ input.button-highlighted,
 	margin-right: 0;
 }
 
+.about-wrap .three-col-images {
+	text-align: center;
+}
+
+.about-wrap .three-col-images img {
+	margin: 0 0 10px;
+}
+
+.about-wrap .three-col-images .last-feature {
+	float: right;
+}
+
+.about-wrap .three-col-images .first-feature {
+	float: left;
+}
+
 .about-wrap .feature-section.images-stagger-right img {
 	float: right;
 	margin: 0 5px 12px 12px;
diff --git a/wp-admin/images/screenshots/twitter-embed-1.png b/wp-admin/images/screenshots/twitter-embed-1.png
new file mode 100644
index 0000000000..d79ee1d7ec
Binary files /dev/null and b/wp-admin/images/screenshots/twitter-embed-1.png differ
diff --git a/wp-admin/images/screenshots/twitter-embed-2.png b/wp-admin/images/screenshots/twitter-embed-2.png
new file mode 100644
index 0000000000..14da4b8236
Binary files /dev/null and b/wp-admin/images/screenshots/twitter-embed-2.png differ