Edit: it's out now on the official site. Guess they felt ready . . .
For Windows, Mac OS X and Linux i686 platforms.
Get your new and improved Firefox now.
From the source:
Firefox 2.0 will be released Tuesday at 5PM PST.
-Can't connect to sites after the upgrade? Check your firewall!
-When will the auto-update happen? (Don't know yet)
-Will it keep my bookmarks and settings? Yes. You can back up your settings to be sure.
-Phishing protection - reports if websites are possible scams
-Session saving - if Firefox crashes, when you open it again, you get the option to restore your tabs and windows
-Web feeds - improved interface for web feeds, including the option to subscribe with an external program or service
-Spell checking - squiggly red lines under words you spell wrong
-Search suggestions - common search terms are suggested as you type in the search box
-Searching a page now searches within text fields
-Does Firefox 2.0 still support Windows 98? Yes. Firefox 3.0 is the release that is planned to drop support for Windows 98.
-Does Firefox 2.0 pass Acid2? Firefox 2.0 is based on the same rendering engine as Firefox 1.5, and so it doesn't pass Acid2. Firefox 3.0 will include a new version of the rendering engine which is expected to pass Acid 2.
-How to I get rid of the close buttons on tabs (go back to how Firefox 1.x was)? Type about:config in the address bar, press enter, and set browser.tabs.closeButtons to 3.