This is the Windows Server Update Services support team blog. We cover all things relating to WSUS and Windows Update.
Looks like the WSUS product team just released WSUS SP2 to the web along with a Knowledge Base article describing the changes. From KB972455 - Description of Windows Server Update Services 3.0 Service Pack 2:
Microsoft has released Service Pack 2 (SP2) for Windows Server Update Services (WSUS) 3.0. This article includes information about the contents of the service pack, how to obtain the service pack, and how to determine whether the service pack is installed.
For all the details and a download link see http://support.microsoft.com/kb/972455.
J.C. Hornbeck | Manageability Knowledge Engineer