Beta 2 is out...
http://fileforum.betanews.com/detail/Mozilla_Firefox_for_Windows/1032985422/1* Automated update to streamline product upgrades.
* Faster browser navigation.
* Drag and drop for browser tabs.
* Improvements to popup blocking.
* Clear Private Data feature.
* Answers.com added to search engine list.
* Descriptive error pages, redesigned options menu, and RSS discovery.
* Better accessibility support.
* Report a broken Web site wizard.
* Better support for Mac OS X.