The Office 2010 December 2011 Cumulative Updates are now available, please see the links below:
http://support.microsoft.com/kb/2639884
Project Server 2010 December 2011 CU:
http://support.microsoft.com/kb/2596997
Project Server 2010 Server Roll up package December 2011 CU:
http://support.microsoft.com/kb/2597015
Project 2010 December 2011 CU:
http://support.microsoft.com/kb/2597006
As always, test these updates on a test environment before deploying to production.
