There are a few changes in our language support that came with Firefox 2.0.0.4. We have officially released Afrikaans and Belarusian. Congratulations to both teams. If you know someone that should or could use those versions and doesn't, please point them at the download page, as those links aren't that easy to find otherwise.
We would like to see as many testers as possible for our beta releases, too. You can find download links to Georgian, Kurdish, and Romanian on the release notes. Those builds are only tested by the localization teams so far and may still contain stop-ship bugs. We need your help to find out.
Feedback on all of these is welcome on bugzilla, or on their respective feedback forums if you're more familiar with those.