The Office 2010 April 2012 Cumulative Updates are now available, please see the links below:
Project Server 2010 Server Roll up package April 2012 CU (Recommended):
Project Server 2010 April 2012 CU (Included in the Server Roll up package):
Project 2010 April 2012 CU:
As always, test these updates on a test environment before deploying to production.