Mozilla has released Firefox 3 Beta 3 on Feb 12, 2008. It’s a developer preview release and is being made available for testing purposes only.

This beta will give you a taste of what’s coming in Firefox 3, but there’s still more to come, and much of what you’ll see may still be a bit rough around the edges.(Mozilla)

Improvements in this 3rd beta release, as mention on the source page, includes approximately 1300 individual changes from the previous beta, including fixes for stability, performance, memory usage, platform enhancements and user interface improvements. Many of these improvements were based on community feedback from the previous beta.

A tool to check who owns the site. Malware protection warns users when they arrive at sites which are known to install viruses, spyware, trojans or other malware. The content of pages suspected as web forgeries is no longer shown. New SSL error pages, Add-ons and Plugin version check, Secure add-on updates, Anti-virus integration, Vista Parental Controls, Effective top-level domain (eTLD) service better restricts cookies and other restricted content to a single domain. Better protection against cross-site JSON data leaks. For more check the Source.

The new Mozilla Firefox 3 beta 3 can be downloaded from the Mozilla Web site, for a variety of Platforms and languages.