Just like the first Moto X, users have been having success rooting by unlocking the bootloader and just flashing SuperSU with CWM. This is a test release so it may be wise just just boot to CWM to flash SuperSU instead of flash it. Use caution as always.
Bootloader Unlock Guide: http://forum.xda-developers.com/moto...-2014-t2876773
CWM Test 8: http://d-h.st/XJr
SuperSU flashable ZIP: http://forum.xda-developers.com/show....php?t=1538053
I can report that this did work for me and I have achieved root.
Steps I took:
1. Unlock bootloader using Motorola's website
2. boot to bootloader, flash or boot to recovery with fastboot command (fastboot flash recovery cwm.img/fastboot boot cwm.img) *There really isn't a reason to flash this. It is very broken. Consider keeping your original recovery!*
3. boot to cwm and flash superSU zip
4. CWM will prompt to fix root, choose YES
Almost everything besides flashing a zip is broken in this CWM release, don't expect to be able to backup with it.