It's been a while, new version of SQL Server plugin for SQL server has not been released.
What are the plans to support SQL server 2008 R2 cluster?
Also, Now that SQL Server 2012 has been released, when will the plugin support it?
SQL Server 2008 R2 is certified on EM 11g, and will also be certified once the EM 12 version of the plug-in is released. We are working on version 2012 and should be certified soon.
Refer to MOS certify for more details.