I am pleased to announce the arrival of Service Pack 2 (SP2) for Project 2010, Project Server 2010 and of course SharePoint Server 2010. The SharePoint Server 2010 SP2 also Project Server 2010 SP2, so no need to load both if you have a SharePoint + Project farm – just load the SharePoint Server 2010 SP2. *** Update - Looking at the file sizes and descriptions - I suspect the note on the Project Server SP2 KB article is incorrect and should read that 2687452 Includes 2687453 - and not the other way around - so if you have SharePoint and Project Server you just need the Project Server 2010 SP2 - 2687452 ***.
The Service Packs contain all cumulative fixes since SP1, starting with the June 2011 Cumulative Update (CU) and the July 2011 Public Update (PU) all the way through to the April 2013 CU and May 2013 PU. The Service Packs also contain previously unreleased fixes. In addition to general product fixes, these fixes include improvements in stability, performance, and security.The complete list of fixes is available here.
The KB articles and downloads can be found at the following links, and the downloads are also available via the Microsoft Update website.
Project Server 2010 Service Pack 2 - http://support.microsoft.com/kb/2687452
For other Office and Sharepoint SP2 packages please visit http://support.microsoft.com/kb/2687521/