The Office 2010 December 2012 Cumulative Updates are now available, please see the links below:
http://support.microsoft.com/kb/2789671
Project Server 2010 Server Roll up package December 2012 CU (Recommended) – delayed:
http://support.microsoft.com/kb/2596956
Project Server 2010 December 2012 CU (Included in the Server Roll up package):
http://support.microsoft.com/kb/2553504
Project 2010 December 2012 CU:
http://support.microsoft.com/kb/2553188
Remember SP1 is a pre-requisite for the December 2012 CUs.
For more details please see:
http://blogs.technet.com/b/projectsupport/archive/2012/12/19/microsoft-project-server-and-sharepoint-server-2007-and-2010-december-2012-cu-announcement.aspx
As always, test these updates on a replica test environment before deploying to production
