Mozilla has made available the second releases candidate for FireFox 3.6. The latest version is a security and stability upgrade and is currently available here. This is NOT a necessary upgrade if you're using 3.5.7, but if you were waiting to test the new 3.6, this RC should be a good, safe version to try.
- Significantly improved stability features
- "Personas," a new feature that allows you to customize the browser's appearance
According to CNET's Stephen Shankland, there are over 1 million users currently testing FireFox 3.6.
You can read Mozilla's announcement here.
You can download FireFox 3.6 here.