The Windows 8 Consumer Preview (Win8 CP) was released for public beta testing on Feb 29, 2012. If you wish to test a Windows 8 client to an existing SBS 2008 or SBS 2011 server, there are some known issues. They include:
- A warning message will be displayed when joining Win8 CP to SBS 2011 standard
- Win8 CP cannot join SBS2008 via http://connect
- Win8 CP cannot get updates via WSUS on SBS2011Standard and SBS2008
Please check out the Official SBS Blog for more details on these issues, and workarounds.