So, building this on a test server running 2012 R2.
Joined to the domain and then installed the WDS role.
Following the guide at http://goo.gl/kVjglF
First major hitch is when coming to download the Windows 10 ADK. The installer gives the error:
Install did not compete successfully.
An error occurred while installing "Documentation"
Unable to verify the integrity of downloaded content. It might be corrupter. Please check your network connection and try again.
Review the Setup log files or contact your system administrator.
A bit of rooting in the logs and a small amount of Google-Fu seems to indicate the the source files have been updated but the installer hasn't. Tracked down an updated installer at http://download.microsoft.com/download/8/1/9/8197FEB9-FABE-48FD-A537-7D8709586715/adk/adksetup.exe which seems to work.
Following that, pretty much a standard run if things so far. Installed the ADK, checked for updates, launched MDT.
Within MDT I've created a Deployment Share as usual, imported the Operating System from the ISO for build 162, and created a standard task sequence.
As of just now, I'm updating the Deployment Share and waiting for the boot wims to be generated so that I can feed them into WDS.