Mozilla has already moved past the first Beta Build of Firefox 4.0
, and is cooking the next development milestone. And it appears that early adopters currently running Firefox 4.0 Beta 1 could very well upgrade to Beta 2 by the end of July 2010. Of course, nothing is set in stone at this point in time, let alone the release date for Firefox 4.0 Beta 2, but the open source browser maker did note that it is targeting a July 22nd release. In fact, Mozilla even said that “would like to ship on or about July 22nd” giving itself a little elbow room with the upcoming development milestone.
When Firefox 4.0 Beta 1 came out at the start of this month, Mike Beltzner, Mozilla’s Director of Firefox, made it clear that the company was looking to deliver additional testing releases once every two to three weeks. This does mean that the delivery of Firefox 4.0 Beta 2 is right on track according to the schedule mentioned by Beltzner.
Of course, Mozilla first has to deal with the blockers/severe bugs that are preventing Firefox 4.0 from graduating to Beta 2. At the same time, the evolution of the open source browser will continue, both under-the-hood and on the surface. At this point in time Mozilla plans to introduce Tabs-on-top to the Firefox 4.0 version designed to run on Mac OS X, just as it did for the Windows flavor of the Beta 1 release
. Additional enhancements will involve add-ons manager UI post-install confirmation/notification, CSS transitions and Retained Layers.