Mozilla will tomorrow officially release Firefox 4. But you can access the FTP server right now and download it a whole 24 hours early.
To download Firefox 4 a day before everyone else, click here, this will connect to the Mozilla servers, login is a guest (no password required), then go to Mac, en-GB or en-US for the British or American version, and then copy Firefox4.0.dmg to your local computer and install Firefox as normal.
Some of the features include:
- Tabs on top
- Better syncing of bookmarks
- Better organization for tabs
- No restart required for add-ons
Thanks to James Whelton for the tip.