Firefox 4 Beta 9 now out fixing 661 bugs.

From the 'Are We There Yet?' files:

Mozilla today officially released Firefox 4 Beta 9 and it's a big improvement over previous betas and a parsec beyond the Firefox 3.6.x experience.

At this stage, after months of development, Mozilla developers are clearly nearing the end of this development marathon. If this had been Google, the 9 Betas would like have been broken up in to 5 (or more) stable releases -- there are just sooo many new features.

For Beta 9, by my count of the buglist, there are some 661 items that were fixed for this beta.

That's staggering. Especially at this point in the release cycle.