The Cumulative Update 2 for System Center 2012 Configuration Manager Service Pack 1 has been released !!! Details of Issues that are fixed descried in the KB2854009

Microsoft released a hotfix that fixes an incorrect reference to Windows Server 2012 in the ConfigMgr 2012 SP1 site database. The incorrect reference causes available updates to be missing for Windows Server 2012. http://support.microsoft.com/kb/2793237