SQL Server 2012 Service Pack 2 CU1 has been released. CU1 for SQL 2012 SP2 contains 40+ bug-fixes for SQL Server 2012.
You may review the list of bugs fixes in SQL Server 2012 SP2 CU1 HERE. Please feel free to test SQL Server 2012 SP2 CU1 in your test environment before implementing SQL Server 2012 SP2 CU1 in Production Environment.
Important: Before you Install SQL Server 2012 SP2 CU1
Please make sure you have a good backup copy of all your system and user databases before you proceed with installing SQL Server 2012 SP2 CU1. Also, make sure you perform roll-up upgrade. One server upgrade, Test, if Successful, move to the next server. This will also help prevent/minimize any downtime required due to SP2 CU1 installation.
How to Get SQL Server 2012 SP2?
If you need to get SQL Server 2012 SP2 CU1, you may download it from the following download link: http://support.microsoft.com/kb/2976982