Oscar Peterson is one of my favorite Québécois. He's also the guy they named WordPress 3.6 for.
Check out the amazing release video from WordPress. It's catchy and the finger-snap was amazingly hilarious.
[*]Twenty Thirteen: We’re shipping this year’s default theme in our first release of the year. Twenty Thirteen is an opinionated, color-rich, blog-centric theme that makes full use of the new Post Formats support.
[*]Audio/Video: You can embed audio and video files into your posts without relying on a plugin or a third party media hosting service.
[*]Autosave: Posts are now autosaved locally. If your browser crashes, your computer dies, or the server goes offline as you’re saving, you won’t lose the your post.
[*]Post Locking: See when someone is currently editing a post, and kick them out of it if they fall asleep at the keyboard.
[*]Menus: Menus have been changed to an accordion-based UI, and a separate tab for bulk-assigning menus to locations.
[*]Revisions: The all-new revisions UI features avatars, a slider that “scrubs” through history, and two-slider range comparisons.
[*]Login Expiration Warning: If your logged in session expires, WordPress will ask you to log back in without taking you away from the page (which is awesome if you’re editing a post).
If you're extra nerdy, here's some cool Audio/Video tips and tricks
So far, my tests on DreamHost and DreamPress have been safe, sane and successful, so we'll be rolling out auto-upgrades over the next couple days... While we're at DreamCon. Because that's how we roll.
There's a 3.6 Troubleshooting Master List up at WordPress.org that I suggest everyone go through first if they're having problems. It's curated by all the forum moderators there.