MDT 2010 was released September 9th 2009.
Michael Niehaus from Microsoft
s Deployment Team has posted an excellent series of blog posts describing the new features:
Other interesting posts on Michaels blog:
For those who are working with MDT I would also recommend to follow the Microsoft Deployment Toolkit Team
Be aware of the following bug described on their blog:Fix for ‘Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed” problem with MDT 2010
The Deployment Guys blog are also an excellent resource.