http://www.ip-192.com/2010/05/29/wordpress-rc1-wp-3-0/
Interesting new features: Multi-domain and multi-site management from a single install and custom menus.
Looking good! Get ready to upgrade!
On a related note, get ready to upgrade/update regardless because malware distributors might be scanning your old install. See:
http://www.ixdownload.com/news/wordp...protected.html