WordPress/wp-admin/about.php

<?php
/**
 * About This Version administration panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once( dirname( __FILE__ ) . '/admin.php' );

wp_enqueue_style( 'wp-mediaelement' );
wp_enqueue_script( 'wp-playlist' );
add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 );

$title = __( 'About' );

list( $display_version ) = explode( '-', $wp_version );

include( ABSPATH . 'wp-admin/admin-header.php' );
?>
<!--[if lt IE 9]><script>document.createElement('audio');document.createElement('video');</script><![endif]-->
<div class="wrap about-wrap">

<h1><?php printf( __( 'Welcome to WordPress&nbsp;%s' ), $display_version ); ?></h1>

<div class="about-text"><?php printf( __( 'Thank you for updating! WordPress %s has lots of refinements we think you&#8217;ll love.' ), $display_version ); ?></div>

<div class="wp-badge"><?php printf( __( 'Version %s' ), $display_version ); ?></div>

<h2 class="nav-tab-wrapper">
	<a href="about.php" class="nav-tab nav-tab-active">
		<?php _e( 'What&#8217;s New' ); ?>
	</a><a href="credits.php" class="nav-tab">
		<?php _e( 'Credits' ); ?>
	</a><a href="freedoms.php" class="nav-tab">
		<?php _e( 'Freedoms' ); ?>
	</a>
</h2>

<div class="changelog point-releases">
	<h3><?php echo _n( 'Maintenance Release', 'Maintenance Releases', 1 ); ?></h3>
	<p><?php printf( _n( '<strong>Version %1$s</strong> addressed %2$s bug.',
         '<strong>Version %1$s</strong> addressed %2$s bugs.', 34 ), '3.9.1', number_format_i18n( 34 ) ); ?>
		<?php printf( __( 'For more information, see <a href="%s">the release notes</a>.' ), 'http://codex.wordpress.org/Version_3.9.1' ); ?>
 	</p>
</div>

<div class="changelog">
	<div class="about-overview">
	<?php
	if ( ! is_ssl() && ( $locale = get_locale() ) && 'en_' === substr( $locale, 0, 3 ) ) : ?>
		<embed src="//v0.wordpress.com/player.swf?v=1.03" type="application/x-shockwave-flash" width="640" height="360" wmode="direct" seamlesstabbing="true" allowfullscreen="true" allowscriptaccess="always" overstretch="true" flashvars="guid=sAiXhCfV&amp;isDynamicSeeking=true" title=""></embed>
	<?php else : ?>
		<img class="about-overview-img" src="//s.w.org/images/core/3.9/overview.png?0" />
	<?php endif; ?>
	</div>
	<h2 class="about-headline-callout"><?php _e( 'A smoother media editing&nbsp;experience' ); ?></h2>
	<div class="feature-section col three-col">
		<div class="col-1">
			<img src="//s.w.org/images/core/3.9/editor.jpg?0" />
			<h4><?php _e( 'Improved visual editing' ); ?></h4>
			<p><?php _e( 'The updated visual editor has improved speed, accessibility, and mobile support.' );
				echo ' ' . __( 'You can paste into the visual editor from your word processor without wasting time to clean up messy styling. (Yeah, we&#8217;re talking about you, Microsoft Word.)' ); ?></p>
		</div>
		<div class="col-2">
			<img src="//s.w.org/images/core/3.9/image.gif?0" />
			<h4><?php _e( 'Edit images easily' ); ?></h4>
			<p><?php _e( 'With quicker access to crop and rotation tools, it&#8217;s now much easier to edit your images while editing posts. You can also scale images directly in the editor to find just the right fit.' ); ?></p>
		</div>
		<div class="col-3 last-feature">
			<img src="//s.w.org/images/core/3.9/drop.jpg?0" />
			<h4><?php _e( 'Drag and drop your images' ); ?></h4>
			<p><?php _e( 'Uploading your images is easier than ever. Just grab them from your desktop and drop them onto the editor.' ); ?></p>
		</div>
	</div>

	<hr>

	<div class="feature-section col two-col">
		<div class="col-1">
			<img src="//s.w.org/images/core/3.9/gallery.jpg?0" />
			<h4><?php _e( 'Gallery previews' ); ?></h4>
			<p><?php _e( 'Galleries display a beautiful grid of images right in the editor, just like they do in your published post.' ); ?></p>
		</div>
		<div class="col-2 last-feature">
			<div class="wp-playlist wp-audio-playlist wp-playlist-light">
				<div class="wp-playlist-current-item"></div>
				<audio controls="controls" preload="metadata"></audio>
				<div class="wp-playlist-next"></div>
				<div class="wp-playlist-prev"></div>
				<?php
				$audio_icon_js = esc_js( includes_url( 'images/media/audio.png' ) );
				$wp_host = '//s.w.org/images/core/3.9/';
				?>

				<script type="application/json">{
					"type":"audio",
					"tracklist":true,
					"tracknumbers":true,
					"images":true,
					"artists":true,
					"tracks":[{
						"src":"<?php echo $wp_host ?>AintMisbehavin.mp3",
						"type":"audio\/mpeg","title":"Ain't Misbehavin'","caption":"","description":"",
						"meta":{
							"artist":"Louis Armstrong & His Orchestra",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"3:21"
						},
						"image":{"src":"//s.w.org/images/core/3.9/louis.jpg","width":308,"height":240},
						"thumb":{"src":"//s.w.org/images/core/3.9/louis.jpg","width":308,"height":240}
					},
					{
						"src":"<?php echo $wp_host ?>JellyRollMorton-BuddyBoldensBlues.mp3",
						"type":"audio\/mpeg","title":"Buddy Bolden's Blues","caption":"","description":"",
						"meta":{
							"artist":"Jelly Roll Morten",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"2:09"
						},
						"image":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64},
						"thumb":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64}
					},
					{
						"src":"<?php echo $wp_host ?>DavenportBlues.mp3",
						"type":"audio\/mpeg","title":"Davenport Blues","caption":"","description":"",
						"meta":{
							"artist":"Bix Beiderbecke & His Rhythm Jugglers",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"2:48"
						},
						"image":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64},
						"thumb":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64}
					},
					{
						"src":"<?php echo $wp_host ?>WolverineBlues.mp3",
						"type":"audio\/mpeg","title":"Wolverine Blues","caption":"","description":"",
						"meta":{
							"artist":"Benny Goodman's Boys",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"2:55"
						},
						"image":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64},
						"thumb":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64}
					},
					{
						"src":"<?php echo $wp_host ?>Louisiana_Five-Dixie_Blues-1919.mp3",
						"type":"audio\/mpeg","title":"Dixie Blues","caption":"","description":"",
						"meta":{
							"artist":"Louisiana Five",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"3:01"
						},
						"image":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64},
						"thumb":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64}
					},
					{
						"src":"<?php echo $wp_host ?>Johnny_Hodges_Orchestra-Squaty_Roo-1941.mp3",
						"type":"audio\/mpeg","title":"Squaty Roo","caption":"","description":"",
						"meta":{
							"artist":"Johnny Hodges Orchestra",
							"album":"78 RPMs & Cylinder Recordings",
							"genre":"Jazz",
							"length_formatted":"2:24"
						},
						"image":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64},
						"thumb":{"src":"<?php echo $audio_icon_js ?>","width":48,"height":64}
					}]
				}</script>
			</div>
			<h4><?php _e( 'Do more with audio and video' ); ?></h4>
			<p><?php _e( 'Images have galleries; now we&#8217;ve added simple audio and video playlists, so you can showcase your music and clips.' ); ?></p>
		</div>
	</div>
</div>

<hr>

<div class="changelog customize">
	<div class="feature-section col two-col">
		<div>
			<?php
				echo wp_video_shortcode( array(
					'mp4'      => '//s.w.org/images/core/3.9/widgets.mp4',
					'ogv'      => '//s.w.org/images/core/3.9/widgets.ogv',
					'webm'     => '//s.w.org/images/core/3.9/widgets.webm',
					'loop'     => true,
					'autoplay' => true,
					'width'    => 499
				) );
			?>
			<h4><?php _e( 'Live widget and header previews' ); ?></h4>
			<p><?php _e( 'Add, edit, and rearrange your site&#8217;s widgets right in the theme customizer. No &#8220;save and surprise&#8221; &mdash; preview your changes live and only save them when you&#8217;re ready.' ); ?></p>
			<p><?php _e( 'The improved header image tool also lets you upload, crop, and manage headers while customizing your theme.' ); ?></p>
		</div>
		<div class="last-feature">
			<img src="//s.w.org/images/core/3.9/theme.jpg?0" />
			<h4><?php _e( 'Stunning new theme browser' ); ?></h4>
			<p><?php _e( 'Looking for a new theme should be easy and fun. Lose yourself in the boundless supply of free WordPress.org themes with the beautiful new theme browser.' ); ?></p>
		<?php if ( current_user_can( 'install_themes' ) ) { ?>
			<p><a href="<?php echo network_admin_url( 'theme-install.php' ); ?>" class="button button-large button-primary"><?php _e( 'Browse Themes' ); ?></a></p>
		<?php } ?>
		</div>
	</div>
</div>

<hr>

<div class="changelog under-the-hood">
	<h3><?php _e( 'Under the Hood' ); ?></h3>

	<div class="feature-section col three-col">
		<div>
			<h4><?php _e( 'Semantic Captions and Galleries' ); ?></h4>
			<p><?php _e( 'Theme developers have new options for images and galleries that use intelligent HTML5 markup.' ); ?></p>

			<h4><?php _e( 'Inline Code Documentation' ); ?></h4>
			<p><?php _e( 'Every action and filter hook in WordPress is now documented, along with expanded documentation for the media manager and customizer APIs.' ); ?></p>
		</div>
		<div>
			<h4><?php _e( 'External Libraries' ); ?></h4>
			<p><?php _e( 'Updated libraries: TinyMCE&nbsp;4, jQuery&nbsp;1.11, Backbone&nbsp;1.1, Underscore&nbsp;1.6, Plupload&nbsp;2, MediaElement&nbsp;2.14, Masonry&nbsp;3.' ); ?></p>

			<h4><?php _e( 'Improved Database Layer' ); ?></h4>
			<p><?php _e( 'Database connections are now more fault-resistant and have improved compatibility with PHP 5.5 and MySQL 5.6.' ); ?></p>
		</div>
		<div class="last-feature">
			<h4><?php _e( 'New Utility Functions' ); ?></h4>
			<p><?php _e( 'Identify a hook in progress with <code>doing_action()</code> and <code>doing_filter()</code>, and manipulate custom image sizes with <code>has_image_size()</code> and <code>remove_image_size()</code>.' ); ?></p>
			<p><?php _e( 'Plugins and themes registering custom image sizes can now register suggested cropping points. For example, prevent heads from being cropped out of photos with a top-center crop.' ); ?></p>
		</div>
</div>

<hr>

<div class="return-to-dashboard">
	<?php if ( current_user_can( 'update_core' ) && isset( $_GET['updated'] ) ) : ?>
	<a href="<?php echo esc_url( self_admin_url( 'update-core.php' ) ); ?>"><?php
		is_multisite() ? _e( 'Return to Updates' ) : _e( 'Return to Dashboard &rarr; Updates' );
	?></a> |
	<?php endif; ?>
	<a href="<?php echo esc_url( self_admin_url() ); ?>"><?php
		is_blog_admin() ? _e( 'Go to Dashboard &rarr; Home' ) : _e( 'Go to Dashboard' ); ?></a>
</div>

</div>
<?php

include( ABSPATH . 'wp-admin/admin-footer.php' );

// These are strings we may use to describe maintenance/security releases, where we aim for no new strings.
return;

_n_noop( 'Maintenance Release', 'Maintenance Releases' );
_n_noop( 'Security Release', 'Security Releases' );
_n_noop( 'Maintenance and Security Release', 'Maintenance and Security Releases' );

/* translators: 1: WordPress version number. */
_n_noop( '<strong>Version %1$s</strong> addressed a security issue.',
         '<strong>Version %1$s</strong> addressed some security issues.' );

/* translators: 1: WordPress version number, 2: plural number of bugs. */
_n_noop( '<strong>Version %1$s</strong> addressed %2$s bug.',
         '<strong>Version %1$s</strong> addressed %2$s bugs.' );

/* translators: 1: WordPress version number, 2: plural number of bugs. Singular security issue. */
_n_noop( '<strong>Version %1$s</strong> addressed a security issue and fixed %2$s bug.',
         '<strong>Version %1$s</strong> addressed a security issue and fixed %2$s bugs.' );

/* translators: 1: WordPress version number, 2: plural number of bugs. More than one security issue. */
_n_noop( '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bug.',
         '<strong>Version %1$s</strong> addressed some security issues and fixed %2$s bugs.' );

__( 'For more information, see <a href="%s">the release notes</a>.' );