Here is a list of useful MDT 2010 and other OS Deployment resources...
Deployvista (My old Blog :) )
Despite the name, dedicated to all types of operating system deployments
Mike's (aka Deploymentbunny) blog
Mikael Nystroms blog
Jason Sandys Blog
Deployment Guys blog
A handful of deployment experts (MCS) are blogging here
Microsoft Deployment Toolkit Team Blog
The MDT team blog
Michael Niehaus blog
Nicknamed "Knowledgehaus" internally for his massive knowledge on deployment, Michael is the lead dev behind MDT.
TrueSec Video Tutorials and Guides
From my time at TrueSec - The Deployment CD's - Free video guides and tutorials on MDT 2010 (RTM). Still available for download (requires registration).
Xtreme Consulting blog
A few of the contractors on the MDT team work for Xtreme, this is their blog
Chris Nackers blog
Deployment Expert, working for Catapult Systems
Josh Mueller blog
Fellow deployment geek...
Maik Koster blog
Deployment Expert, Author, and Developer
French deployment site (in French) hosted by Yannick Plavonil.
MDT Wizard Editor
A wizard editor for the MDT 2010 Lite Touch wizard (Which also can be used with ConfigMgr 2007)
Pretty Good Frontend
A bunch of web services and a Frontend, that I wrote for ConfigMgr 2007 and MDT 2010 Zero Touch. With some tweaks it also works with MDT 2010 Lite Touch..
Maik Kosters enhanced version of my frontend
MDT Scripts, Front Ends, Web Services, and Utilities for use with ConfigMgr/SCCM
140+ readymade web services and scripts for MDT 2010, all written by Maik Koster
MDT Web FrontEnd
A web portal (management UI) for the MDT database, written by Maik Koster
Deploying Windows 7 Essential Guidance from the Windows 7 Resource Kit and TechNet Magazine
A free ebook on Windows 7 deployment. 412 lovely pages.
Windows, ConfigMgr and OS Deployment books Johan
Peter Daalmans blog