Update Rollup 6 for SBS 2008 was released yesterday.
It resolves three issues all relating to Windows 8 deployment in a SBS 2008 environment.
See knowledgebase article below for full details.
http://support.microsoft.com/kb/2729101
Update Rollup 3 for SBS 2011 was also released yesterday.
It resolves three issues relating to Windows 8 in a SBS 2011 environment, plus an additional four items.
See knowledgebase article below for full details.