Mozilla has three main versions of Firefox now: the release version for mainstream users, the beta version with new features under testing, and the most raw, Aurora, a version to introduce those new features. Those three versions correspond to Chrome’s stable, beta, and dev releases. There’s also a nightly Firefox build for those who want to try whatever patches have arrived in the last 24 hours, but it’s most likely to be unstable.
 
The new process means that whatever is done on a particular schedule can ship in the new version–a more calendar-focused process than feature-focused process. One goal of the approach is to reduce the penalty of missing a train, because with a rapid release cycle, another train should come to the station soon.
 

“The shift to a rapid release development cycle delivers cutting edge Firefox features, performance enhancements, security updates and stability improvements to users faster,” Mozilla said in its blog post announcing the Firefox 5 beta. “After five weeks of testing on the Firefox Aurora channel, the next version of Firefox is ready for the beta channel.”
 
Another feature in the new beta is the ability to switch among the various versions of Firefox by clicking “change” in the “About Firefox” dialog box.

I used to use Firefox back when Internet Explorer was lacking, but so far Internet Explorer 9 is awesome, I have no complaints. So as far as i’m concerned, Firefox, keep releasing your browser revisions and I will keep using IE9

-NS