Microsoft has released SQL Server 2012 RTM Cumulative Update 10 (Build 11.0.2420). This CU only has four fixes in the Public hotfix list. Two for SSAS, one for SSRS, and one for the Database Tuning Advisor (DTA). From a Database Engine perspective, there is not too much to get excited about for this particular cumulative update. This is likely to be one of the last (if not the last) cumulative updates for the RTM branch of SQL Server 2012. I am guessing that SQL Server 2012 Service Pack 2 should be showing up relatively soon.

Hopefully, most people have made the jump to SQL Server 2012 Service Pack 1 by now. If you are on the SP1 branch with a recent CU, I would wait until after SQL Server 2012 SP2 CU1 is released before you move to the SP2 branch. This is because the SP2 branch will have been frozen for a while (probably two-four months), so it will not include the hotfixes from the most recent cumulative updates for SQL Server 2012 SP1.

If you are one of those organizations that does not deploy cumulative updates (so you are still on SQL Server 2012 RTM or SQL Server 2012 SP1 RTM), I would plan on getting SQL Server 2012 SP2 RTM deployed as soon as possible after it becomes available, after you have done your necessary testing.