The Windows Assessment and Deployment Kit (Windows ADK) is a collection of tools
that you can use to customize, assess, and deploy Windows operating systems
to new computers.
http://www.microsoft.com/en-us/download/details.aspx?id=39306
MDT 2013 Preview includes:
Dont forget to sign up for the Client Management program on Connect in the MDT group.
System Center 2012 Configuration Manager R2 preview is available for download for MSDN subscribers.
System Center 2012 R2 Preview Configuration Manager (x86 and x64) – (Multilanguage).
http://msdn.microsoft.com/subscriptions/json/GetDownloadRequest?brand=MSDN&locale=en-us&fileId=53939&activexDisabled=false&akamaiDL=true