The SharePoint 2010 June 2010 CU was released for Foundation & Server Products. Download the hotfix and apply it to your farm here:
http://support.microsoft.com/kb/2028568 - WSS
http://support.microsoft.com/kb/983497 - MOSS
http://support.microsoft.com/kb/2075990 - Project Server
http://support.microsoft.com/kb/2204027 - WAC
Caveat to mention: Federated UPA will break if you do not patch both the child/parent farms. http://blogs.technet.com/b/nathbr/archive/2010/08/12/june-cu-breaks-upa-if-you-patch-the-child-farm-and-not-the-federated-farm.aspx. Fix will be implemented in the August CU.
I will be doing a TechReady 11 Presentation on Friday July 30th - 1:00pm-2:15pm PST on SharePoint Patching specifically.
Title: OSP332 - Understanding and Applying software updates to SharePoint 2010
Sam Hassani Premier Field EngineerNate Bruneau Service Engineer MSIT
Feel free to join me if you are already going to the conference.