The third Firefox 3 Release Candidate is now available for download . It contains a single change for Mac OS X users only; there is no change for users running previous Firefox Release Candidate versions on Windows or Linux. Ongoing planning for Firefox 3 can be followed in the minutes of the Firefox 3 Planning Meetings , as well as in mozilla.dev.planning and on irc.mozilla.org in #granparadiso.
Testers can download the third Firefox 3 Release Candidate builds for Windows , Mac OS X and Linux in over 45 different languages . Developers should also read the Firefox 3 for Developers article on the Mozilla Developer Center .
Final version of firefox 3 will be available for download on Coming Tuesday, June 17th
source : http://developer.mozilla.org/devnews/