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.