During the Ignite 2015,Microsoft announced about service packs for SCCM Configmgr 2012 (will be released during next week) also about Configmgr technical preview(A 60 days evaluation is already out for public) .
Today ,Microsoft released another Cumulative Update 5 for System Center 2012 R2 Configuration Manager and is ready for Download.
Note: As Microsoft announced about the availability of Service Pack for Configuration manager 2012 R2 during next week ,it is better to wait for another week since the fixes available in CU5 also available in Service Pack including other features.
You can Download the cumulative Update 5 from https://support.microsoft.com/en-us/kb/3054451
This update fixes the issues on:
Software distribution and application management
Site servers and site systems
Operating system deployment
Issues that are fixed with description can be read from https://support.microsoft.com/en-us/kb/3054451
Restart information : You do not have to restart the computer after you apply this update.
This update is applicable to :
Central Administrative site (CAS)
Configuration manager console
Admin Console Version :5.00.7958.1604
Configmgr Client Version:5.00.7958.1604
Endpoint Protection Client :4.7.0209.0
No Version change to Site System(you still have R2 Version on the Site properties) :5.00.7958.1000