Firefox 3.0b1 has been released last week from the Mozilla Corporation and yesterday followed the first experimental package for openSUSE. It’s available from the buildservice’s mozilla:beta repository and its version is 2.9.91 because of RPM’s version number interpretation if you wonder. Note that that release (and its RPM package) is for testing purposes only. Backing up your firefox profile in
~/.mozilla/firefox is highly recommended before trying that version.
Another sidenote: Mozilla applications are currently not really working with the gcc 4.3 release in Factory because of optimization issues.