After the release of Firefox 4 beta 1, today Mozilla has rolled out Firefox 4 beta 2 web browser which is available in 23 different languages for all major operating systems like Windows, Mac and Linux.

Firefox 4 Beta 2 New Features:

• Evolution of the New Firefox Look – Tabs on Top
• App Tabs
• CSS3 transitions for developers
• Retained layers for developers
• Changes to XPCOM framework

To know further details about Firefox 4 beta 2 check out release notes. To learn how App Tabs work in Firefox 4 beta watch out the following video.

Download Firefox 4 Beta 2