Firefox 4.0 Beta 2 has been released by Mozilla and is available for download.New feature added in this update is App Tabs and tabs on top feature stayed as same in Firefox 4.0 beta 1.
what’s new in Firefox 4.0 Beta 2
Firefox with tabs on top and introduces the ability to turn tabs into App tabs.You can turn mostly visited websites into App Tabs .
Firefox 4 Beta 2 has support for new CSS3 features like Transitions and Transformations ,making fun to add elegant animations to your websites.
Adding retained layers in Firefox 4 beta allows super fast scrolling on complex websites.
Changes to XPCOM framework improves start up time when you load Firefox.
Read more details on Firefox 4.0 Beta 2 here.