Q: Which versions of System Center Configuration Manager support Windows 8 and Windows 2012?
Although Configuration Manager in System Center 2012 can deploy Windows 8 and Windows Server 2012, Configuration Manager 2007 can't deploy the OSs in a supported manner, but can patch and maintain them, including handling endpoint protection.
Microsoft has a more detailed blog post about System Center support for Windows 8 and Server 2012. You might also take a look at the FAQ "What are the major new features in System Center 2012 SP1?" and "Q: How do I upgrade System Center Virtual Machine Manager and App Controller 2012 to SP1?"