Microsoft has released SQL Server 2012 Service Pack 2 Cumulative Update 8, which is Build 11.0.5634.1. This CU has 23 fixes in the public fix list, and a number of them look pretty significant. If you are on SQL Server 2012, you need to be on the Service Pack 2 branch by now (especially since the RTM and SP1 branches are no longer “supported service packs”). If you are on SP2, I think you are much better off on the latest cumulative update than on the original SP2 RTM build.