Just in case you missed the announcement, yesterday the Ops Manager team released the following to their OpsMgr 2007 R2 TAP and MP Beta - Windows programs on Connect (http://connect.microsoft.com):
A public beta version of our next Windows Server OS MP release which provides support for Server 2008 R2 (aka Win7 Server), monitoring for logical disk fragmentation and various bug fixes
- A known issues list for monitoring Server 2008 R2 with OpsMgr 2007 SP1.
If you are already a member of either of those programs then please feel free to deploy the MP, begin managing Server 2008 R2 systems, follow the steps in the evaluation guide included in the MP package, and send us feedback via Connect and any issues you encounter.
For more information see their original post here.