Firefox 11 is based on Gecko 11, Firefox 11.0 final version has been released on March 13, 2012
What’s new in Firefox 11:
- Firefox can now migrate your bookmarks, history, and cookies from Google Chrome
- With Sync enabled, add-ons can now be synchronized across your computers
- The CSS text-size-adjust property is now supported
- The outerHTML property is now supported on HTML elements
- View source syntax highlighting now uses the HTML5 parser
- Read more changes on this version here.