The SQL Server team has released CU #5 for Service Pack 1.
- KB article: KB #2861107
- Build # is 11.0.3373
- This build has 30 fixes by my count.
Relevant for builds 11.0.3000 -> 11.0.3372. Do not attempt to install on SQL Server 2012 RTM (any build < 11.0.3000) or any previous version.