Already been getting some questions if one can run the connect wizard to get Windows 8 on SBS 2011 Standard/Essentials and found these links:
How to: Connect Windows 8 Consumer Preview to Windows Home Server 2011 | We Got Served:
note that you have to enable .net 3.5.
MPECS Inc. Blog: SBS 2011: Configure SBS Connect Wizard for Windows 8:
Don’t know if you still need to do this for the consumer preview, I would honestly expect so given that the build is higher than the Dev edition and the connect wiz is doing a version check.
Otherwise remember it’s a beta and that WSUS doesn’t push out Windows 8 updates at this time.