Mozilla has dumped the schedule of Firefox 3.7 and will release Firefox 4.0 after the almost ready Firefox 3.6. So after 3.6, Firefox 4.0 will come most probably at the end of this year or early 2011. Last year Mozilla had told that Firefox 3.6 and then Firefox 3.7 will come. After that Firefox 4.0 will be released. And at that time we showed the “Mockup of Firefox 3.7” on different versions of Windows as well. But most probably those features and look will come with Firefox 4.0. These updates came directly from the Mike Beltzner, director of Firefox.
According to Beltzner,
Rather than add features to Firefox only in once- or twice-a-year upgrades, Mozilla will quietly insert some functionality via its regular security updates, which appear every four to six weeks. That means Firefox 3.7, which was slated for a second quarter release, has been dropped from the development schedule. We learned an awful lot about what slows down our schedule, and that will help us plan future releases.
Firefox 3.6 RC1 is already released and the developers has proposed January 19 and January 26 for final release of version 3.6. After that Firefox will get the updates thru Security updates which appears every four to six weeks.