Firefox 3 is out of beta and the first release candidate is available for download now.

The Firefox 3 Release Candidate is a public preview release intended for developer testing and community feedback. It includes new features as well as dramatic improvements to performance, memory usage and speed.

New features and changes in this milestone:

• Improvements to the user interface based on user feedback, including changes to the look and feel on Windows Vista, Windows XP, Mac OS X and Linux.
• Changes and fixes for new features such as the location bar autocomplete, bookmark backup and restore, full page zoom, and others, based on feedback from our community.
• Fixes and improvements to platform features to improve security, web compatibility and stability.
• Continued performance improvements: changes to our JavaScript engine as well as profile guided optimization continues to improve performance over previous releases as measured by the popular SunSpider test from Apple, and in the speed of web applications like Google Mail and Zoho Office.