Yesterday Microsoft released Cumulative Update 5 for SCCM 2012 R2: https://support.microsoft.com/en-us/kb/3054451.
And when it comes down to SCCM, Johan is one of those rare persons who knows a LOT about it. So I totally believe him.
As goes with any update, I always advice my customers to wait a while before rolling them out, since QC isn’t that good any more. So TEST yourself before you WRECK yourself .