Service Pack 2 (SP2) for Project 2010 and Project Server 2010 has been released.

http://blogs.technet.com/b/projectsupport/archive/2013/07/23/project-2010-and-project-server-2010-service-pack-2-sp2-released.aspx

As with any service pack (SP) or cumulative update (CU), please run the installation and perform functionality validation testing in a test environment using the link below before installing in production.

http://technet.microsoft.com/en-us/library/gg502592(v=office.14).aspx