Per Majorgeeks.com, Firefox 2.0 final has been released.
http://www.majorgeeks.com/Mozilla_Firefox_d2248.html
2.0 information is not yet showing up on the Mozilla/Firefox website, but the download link is working:
http://majorgeeks.com/downloadget.php?id=2248&file=1&evp=7b5b67cedfd41e9782a30d14601a0cb7
I have been using the 2.0 beta and love it, fast and clean. Tried IE 7 to compare the 2 and hated it.
I would hold up getting Firefox 2.0 until the Mozilla Foundation officially releases it. The reason is simple: these "early" releases may still be the Release Candidate 3 and/or contain a virus.