Why Microsoft decided not to ship any deployment tools when Enterprise companies are supposed to evaluate Windows Technical Preview I have no idea. But I don't work for Microsoft so I guess I'm not supposed to understand those things.
Anyway, if you try to deploy Windows Technical Preview using MDT 2013 and Windows ADK 8.1 it fails by default because the servicing stack version is wrong.
Update 2014-10-02: For support for adding roles and features, check the comment from Seth Lerman (in the comments section).
First, this is not supported so don't blame me if something is not working.
Second, the fix is to simply have the the task sequence copy the right servicing stack to the WinPE 5.0 boot image.
On your MDT server, copy the dism.exe and DISM folder from a x64 WTP boot.wim file to your deployment share, in my case E:\MDTProduction\Tools\x64.
The dism.exe file and DISM folder are found in the X:WindowsSystem32 on your boot image (once booted), or E:\Mount\Windows\System32 if you just mounted the boot.wim.
After copying the files, add two run command line actions to your Windows Technical Preview task sequence (and only this task sequence).
Copy WTP dism.exe
cmd /c copy %deployroot%\tools\%architecture%\dism.exe x:\windows\system32 /y
Copy WTP DISM subsystem
cmd /c copy %deployroot%\tools\%architecture%\dism* x:\windows\system32\dism /y
Happy Deployment, Johan