Version jump from Firefox 3.1 to Firefox 3.5

German news source Golem.de reports (German) that the next release of Firefox might be numbered Firefox 3.5. They cite the Firefox3.1 StatusMeetings on 2009-03-04.

Need to do some testing to find any weirdness with 3.1 -> 3.5 version change.

The reason for the jump is the amount of changes. The next pre-release (beta) of Firefox 3.1 Beta 3 is scheduled for 12th of March 2009.