I already wrote something about the Hydration Kit for Beta 2, but now Johan Arwidmark just released his Hydration Kit for the System Center Configuration Manager 2012 RC2.
He claims that a functional lab environment can now be built in under 2 hours. (it usually works! ;)
Download it at http://www.deploymentresearch.com/Blog/tabid/62/EntryId/49/The-Hydration-Kit-for-ConfigMgr-2012-RC2-is-available-for-download.aspx and start testing it!