Mozilla has made available the Firefox 3 Release Candidate 2 (RC2) today. If you have not yet switched from Firefox 2 I highly suggest you do switch to Firefox 3 RC2 as its much faster and uses lesser memory than Firefox 2.
In addition to that there are lots of exciting new features integrated in this release which include;
Places, the integrated history and bookmarks manager interface powered by SQLite, a small open source database engine that provides much more robust querying capabilities.
Tagging a new Firefox feature tightly related with Places and some of the changes to the location bar.
The location bar is no longer restricted to web addresses but also looks into bookmark and history page titles and tags which make it more comprehensive.
For more information and complete review of the Firefox 3 RC2 visit Mozilla Links.