Update for Configuration Manager 2012 Sp1 is available.
This update adds support for Windows 8.1-based client computers in Microsoft System Center 2012 Configuration Manager Service Pack 1. Windows 8.1 is added to the supported platform list.
If you are looking for Update Rollup 3 for System Center 2012 Service Pack 1 see the link below. A lot if issues is fixed in this update.
- Update for App Controller, DPM, SCVMM, SCOM: http://support.microsoft.com/kb/2836751