On Tuesday, January 31, 2006, WordPress version 2.0.1 was released to the public. Specific information on downloading and the new features of 2.0.1 can be found in the WordPress Dev Blog v2.0.1 Announcement. For information on the changes and improvements in this new version, see Changelog for 2.0.1.
Download and Upgrade Information
Archive copies are available for download at http://wordpress.org/download/release-archive/
WordPress Forum Discussion with how-to steps and troubleshooting regarding the update: