(1)Retina ready(2) New welcome screen(3) Add Media is a new button(4)HTML tab is now the TEXT tab
(1) Edit image screen more like the edit post screen, allowing for editing the caption, alternate text and adding content in the “Attachment Page Content” box. (2) Imagick is now the default engine for manipulation.(3) The Media Uploads Folder can no longer be set from within SettingsMedia. Define it in your wp-config.php file.
The Links Manager will be disabled by default on newWordPress installs Upgrades from a previous version to WordPress 3.5 will keep the menu in place.There is a new Link Manager plugin.
Minimal design approach(2) Responsive design(3) More of a starter theme than a finished product
Three new services: Soundcloud, Slideshare, and Instagram(2) maximum size for embedded media will be inherited from your theme’s CSS with no options in the media settings page.
(1) XML-RPC protocol previously shipped as disabled by default for security reasons. (2) Those issues have been resolved so the XML-RPC protocol will be enabled by default in version 3.5. (3) Atom is gone as of 3.5
On the plugin installation screen you can now see a list of plugins you have favorited on wordpress.org.
Wordpress 3.5 in a 5-minute blast
WordPress 3.5 in a 5-minute blastPhilly ‘burbs WordPress Meetup: December 2012