Beta 2 of Mozilla Firefox 2.0 has just appeared on the Mozilla FTP in the release folder, it's safe to say that this is Beta 2 and not a pre-beta.

Firefox 2 provides the same clean, streamlined, interface as previous versions, with small improvements to make it easier to use. In addition, it includes improved security features and useful tools to make the Internet experience safer, faster, and better than ever before.

Download: Mozilla Firefox 2.0 Beta 2 (Windows)
View: New Features for End Users @ Mozilla Developer Center
Source: Neowin.net