The Mozilla Project has posted the second beta of Firefox 2.0, New features in 2.0 include:
- Anti-Phishing Protection.
- Search suggestions now appear with search history in the search box for Google, Yahoo! and Answers.com
- Scrollable tabs
- Ability to re-open accidentally closed tabs
- Better support for previewing and subscribing to web feeds
- Inline spell checking in forms (ironically the first word it flagged for me as misspelled was "Firefox")
- Search plugin manager
- Microsummaries feature for bookmarks
- Automatic restoration of your browsing session if there is a crash
- New combined and improved Add-Ons manager for extensions and themes
- New Windows installer
- JavaScript 1.7
- Client-side session and persistent storage (a really hideous idea, sure to be misused)
svg:textPath
It's not immediately clear what's changed since beta 1, but presumably bugs were fixed.
The inline spell checking is indispensable, and worth the upgrade alone.