Finally, a stable version of the WordPress 2.3 RC1 is out. Although a lot of effort was put in to make sure this release is stable, it is still a pre-release software. If you plan to try out the new feature of WordPress 2.3, remember to backup your database before upgrading. Due to certain changes in the database for the latest version, you will not be able to revert back to your previous version without a backup. A final release of version 2.3 is scheduled on the 24th of September.