After more delays, Mozilla has released the eighth beta for Firefox 4.0 on December 21st. This is a regular beta release and is being made available for testing purposes only.
New stuff in this Beta 8 release:
- The Firefox Sync setup experience has been greatly improved across desktop and mobile devices
- Speed, functionality, and compatibility improvements to WebGL
- Additional polish for the Firefox Add-ons Manager
- See the complete changelist from the previous beta
For more info see the release notes for Firefox 4 Beta 8. The next planned release is the Beta 9.
The Firefox Extension Guru's Blog 