Download Firefox 3 beta for developers here http://developer.mozilla.org/en/docs/Main_Page if you DARE!
Firefox 3 for developers
If you’re a developer trying to get a handle on all the new features in Firefox 3, this is the perfect place to start. This article provides a list of the new articles covering features added to Firefox 3. While it doesn’t necessarily cover every little change, it will help you learn about the major improvements
