The official first Release Candidate for Firefox 3--the next, much faster version of the open source browser that could--is now available. It hit that milestone last night. This release is all about stability and speed and bug fixes; there aren’t any huge new features to trumpet if you’ve been watching the betas. But if you had trouble with beta 4 or beta 5 (which for Mike Gunderloy, who writes here, caused problems), the official Release Candidate is much better. Like Mike, I've been using Firefox 3 since early in its cycle. The improvements over the previous versions in rendering speeds are palpable, although this release still doesn't handle my extensions. Check out more on what Mike has to say at our sister blog WebWorkerDaily, and stay tuned for updates this weekend as we take RC1 for a spin.