Michael just posted a blog on the VMM Connector for RDS that was just released today.

http://blogs.technet.com/b/mkleef/archive/2011/01/19/scvmm-rds-connection-broker-plugin-released.aspx

You can find the connector MSI package and the related documentation here. http://go.microsoft.com/fwlink/?LinkID=195952

Just install on top of VMM 2008 R2 Administrator Console and you can take advantage of dynamic placement VDI scenarios through VMM.