For the 36.6% of APers that use Firefox...
Firefox 3.5 Release Candidate 1 is due in a week or so with the final expected late June.
http://blogs.zdnet.com/open-source/?p=4298

Here is a link to the new features in 3.5
https://developer.mozilla.org/En/Fir...for_developers

But the biggest change is that it is even faster than 3.0 (which is fast).