Microsoft Windows Server Update Services (WSUS) 3.0 was released earlier today.
Download: http://www.microsoft.com/downloads/details.aspx?FamilyID=e4a868d7-a820-46a0-b4db-ed6aa4a336d9&DisplayLang=enMore info: http://blogs.technet.com/upstate-ny-technology/archive/2007/04/30/microsoft-windows-server-update-services-wsus-3-0-has-been-released.aspx
I've begun migration of my WSUS v2.0 SP1 to v3.0. Pushed it out to the top level server - no problems so far. I'll post more updates once the entire distribution network is done.