Good news! UR2 is for System Center 2012 SP1 is available to download. Bug fix is listed in here.
Manual download the update is available as listed below. No SCVMM and SCCM update.
App Controller (KB2815569)
Download the App Controller update package now.
Operations Manager (KB2828615)
Download the Operations Manager update package now.
Operations Manager - UNIX and Linux Monitoring (Management Pack Update) (KB2828653)
Download the Operations Manager Cross Platform update package now.
Service Manager (KB2828618)
Download the Service Manager update package now.
Orchestrator (KB2828616)
Download the Orchestrator update package now.
Data Protection Manager (KB2822782)