An update (CU4) was released yesterday, Feb 2, 2015, for System Center Configuration Manager 2012 R2 that replaces Cumulative Update 3 (CU3).
This update addresses many distribution related issues, some minor OSD issues, a few critical site issues, some minor client bugs, some MDM fixes, and some SUP fixes.
Also, there have been some additions, like new PowerShell cmdlets (https://support.microsoft.com/kb/3031717) fixes as well as 34 new ones like:
- Add-CMDeploymentTypeDependency which adds a deployment type as a dependency to a dependency group.
- Add-CMDeploymentTypeSupersedence which sets one deployment type to supersede another.
- Get-CMDeploymentTypeDependency which gets existing dependent deployment types from a dependency group.
- Get-CMQuery which gets a query.
Some optimizations have been made to reduce latency and optimize the data replication in large hierarchies.
Lastly, the updated Endpoint Protection client has been updated to match the version distributed currently.
You can find more information here: