Index: wp-admin/about.php
===================================================================
--- wp-admin/about.php	(revision 20966)
+++ wp-admin/about.php	(working copy)
@@ -52,9 +52,11 @@
 	<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">
@@ -65,6 +67,18 @@
 </div>
 
 <div class="changelog">
+	<h3><?php _e( 'Twitter Embeds' ); ?></h3>
+
+	<div class="feature-section images-stagger-left">
+		<img src="<?php echo esc_url( admin_url( 'images/screenshots/twitter-embed.png' ) ); ?>" class="image-50" />
+		<h4><?php _e( 'Embedding a tweet is as easy as pasting a Tweet URL on its own line' ); ?></h4>
+		<p><?php _e( "Twitter embeds allows you to display any individual tweet in a blog post or post comment, complete with the tweet's text, action links allowing readers to reply, retweet, and favorite tweets without leaving your site, inline links, links to hashtag pages, linked usernames, and a follow button in the tweet." ); ?></p>
+	</div>
+
+</div>
+
+
+<div class="changelog">
 	<h3><?php _e( 'Better Captions' ); ?></h3>
 
 	<div class="feature-section images-stagger-right">
Index: wp-admin/css/colors-classic.dev.css
===================================================================
--- wp-admin/css/colors-classic.dev.css	(revision 20966)
+++ wp-admin/css/colors-classic.dev.css	(working copy)
@@ -2362,9 +2362,9 @@
 	background: #fff;
 	border-color: #dfdfdf;
 
-	-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 {
Index: wp-admin/css/colors-fresh.dev.css
===================================================================
--- wp-admin/css/colors-fresh.dev.css	(revision 20966)
+++ wp-admin/css/colors-fresh.dev.css	(working copy)
@@ -1948,10 +1948,11 @@
 .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 {
Index: wp-admin/css/ie.dev.css
===================================================================
--- wp-admin/css/ie.dev.css	(revision 20966)
+++ wp-admin/css/ie.dev.css	(working copy)
@@ -439,6 +439,15 @@
 	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;
Index: wp-admin/css/wp-admin-rtl.dev.css
===================================================================
--- wp-admin/css/wp-admin-rtl.dev.css	(revision 20966)
+++ wp-admin/css/wp-admin-rtl.dev.css	(working copy)
@@ -1403,6 +1403,14 @@
 	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%;
Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 20966)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -5076,7 +5076,7 @@
 
 .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 @@
 }
 
 .about-wrap .feature-section img.image-30 {
-	max-width: 32%;
+	max-width: 31.2381%;
 }
 
 .ie8 .about-wrap .feature-section img {
@@ -5123,6 +5123,22 @@
 	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;
@@ -5130,7 +5146,7 @@
 
 .about-wrap .feature-section.images-stagger-left img {
 	float: left;
-	margin: 0 12px 12px 5px;
+	margin: 0 22px 12px 3px;
 }
 
 @media only screen and (max-width: 900px) {