As part of their Incremental Service Modelling, Microsoft have released SQL Server 2012 Service Pack 2 Cumulative Update 1!
In my article about SQL Server 2012 SP2 I shared a post about a bug that was not fixed in SQL 2012 SP2 which was in earlier versions. SQL Server 2012 Service Pack 2 is available - but there's a catch! Full credit goes to Aaron Bertrand for posting the information.
Service Pack 2 CU#1 can be applied to any of the following Microsoft SQL Server 2012 editions:
There are a total of 55 fixes, the highlights for me being:
2961254 FIX: The execution of an MDX query in SSAS 2012 or SSAS 2014 is much slower than it is in SSAS 2008 R2
2969896 FIX: Data corruption occurs in clustered index when you run online index rebuild in SQL Server 2012 or SQL Server 2014