This maintenance release fixes 34 bugs with 3.9, including numerous fixes for multisite networks, customizing widgets while previewing themes, and the updated visual editor. There is an improvements to the new audio/video playlists feature and some adjustments to improve performance.
List of Files Revised
readme.html
wp-admin/css/edit.css
wp-admin/css/forms-rtl.css
wp-admin/css/login-rtl.min.css
wp-admin/css/admin-menu-rtl.css
wp-admin/css/wp-admin-rtl.min.css
wp-admin/css/edit-rtl.css
wp-admin/css/forms.css
wp-admin/css/admin-menu.css
wp-admin/css/login.min.css
wp-admin/css/wp-admin.min.css
wp-admin/about.php
wp-admin/user/menu.php
wp-admin/includes/ajax-actions.php
wp-admin/js/post.min.js
wp-admin/js/customize-controls.min.js
wp-admin/js/post.js
wp-admin/js/customize-controls.js
wp-admin/custom-header.php
wp-admin/credits.php
wp-admin/freedoms.php
wp-includes/ms-settings.php
wp-includes/class-wp-editor.php
wp-includes/media.php
wp-includes/js/shortcode.min.js
wp-includes/js/customize-views.js
wp-includes/js/media-views.min.js
wp-includes/js/tinymce/plugins/wpview/plugin.js
wp-includes/js/tinymce/plugins/wpview/plugin.min.js
wp-includes/js/tinymce/plugins/wordpress/plugin.js
wp-includes/js/tinymce/plugins/wordpress/plugin.min.js
wp-includes/js/tinymce/plugins/wpeditimage/plugin.js
wp-includes/js/tinymce/plugins/wpeditimage/plugin.min.js
wp-includes/js/tinymce/plugins/wplink/plugin.min.js
wp-includes/js/tinymce/plugins/wplink/plugin.js
wp-includes/js/tinymce/wp-tinymce.js.gz
wp-includes/js/customize-models.js
wp-includes/js/mce-view.js
wp-includes/js/mediaelement/wp-playlist.js
wp-includes/js/mediaelement/wp-mediaelement.css
wp-includes/js/media-audiovideo.min.js
wp-includes/js/shortcode.js
wp-includes/js/media-views.js
wp-includes/js/customize-views.min.js
wp-includes/js/media-audiovideo.js
wp-includes/js/customize-models.min.js
wp-includes/js/mce-view.min.js
wp-includes/version.php
wp-includes/default-widgets.php
wp-includes/script-loader.php
wp-includes/media-template.php
wp-includes/ms-load.php
wp-includes/css/editor-rtl.css
wp-includes/css/editor.css
wp-includes/css/media-views-rtl.min.css
wp-includes/css/media-views.min.css
wp-includes/css/editor-rtl.min.css
wp-includes/css/editor.min.css
wp-includes/css/media-views-rtl.css
wp-includes/css/media-views.css
wp-includes/widgets.php