Changelog
New API - POST
New API just landed on the live server. It allows to send a post request containing data to display new fiddle. Feel free to write a plugin or simply use it in your project documentation.
You really should read the documentation first.
Git/Gist API new feature
We’ve added an ability to switch dependencies on (the plugins and libs placed under the framework fields). http://doc.jsfiddle.net/use/github.html
Toggle Sidebar
Simply hit ctrl+shift+↑ (yes, we know it’s not the best shortcut - we will come out with something more suitable soon).
User Interface
Dialog window looks much better now

Share Result added

Setup
HTML 5 becomes the default DocType
Bug fixes
Do not write default CSS code preceeding specific fiddle’s one
Layout breaks when pressing RESET
Edit
Information about the default DTD and Share Result added