A clip from the MDT team blog on Technet:

MDT 2010 Release Candidate is Now Available for Download!

We are pleased to announce the immediate availability of the release candidate of MDT 2010.  This release contains numerous bug fixes since MDT 2010 Beta 2.  MDT 2010 RC has been tested and will work with Windows 7 RTM and Windows Server 2008 R2 RTM as well as all previously supported operating systems.

I bet Johan Arwidmark is pretty excited about this :-)

Read the complete post at http://wmug.co.uk/blogs/r0b/archive/2009/08/20/mdt-2010-is-released.aspx