I am glad to share with you that Microsoft just released the update rollup 4 for System Center 2012 R2.
How to obtain and install Update Rollup 4 for System Center 2012 R2.
You have two options to obtain and install UR4:
1- The first option is through regular Microsoft Windows Update in control panel.
2- The second option is to manually download the update packages from the Microsoft Update Catalog or the Microsoft Download Center:
Data Protection Manager
Download the Data Protection Manager update package now.
Download the Operations Manager update package now.
Download the Service Manager update package now.
Download the Service Reporting update package now.
Windows Azure Pack
Download the Windows Azure Pack update package now.
Windows Azure Pack Websites
Download the Windows Azure Pack Web Sites Version 2 update package now.
Warning: Please remember that you must try the update first in a dev environment before you install them in production!