I originally posted my own thread, but just found this one so wanted to chime in as well.
My update process didn't go smoothly. Android insisted all my data had been corrupted during the update and that I needed to factory reset. Factory reset wouldn't work, however (nothing in recovery did), and after an hour+ of fiddling, android finally booted and was happy. To be safe I went ahead and did a reset from settings but I'm still seeing many of the issues you guys are:
- Optimizing all my apps on (nearly) every boot
- All kinds of bluetooth issues. In particular the Moto Assist while driving is now useless.
- Weird crashes.
I'm hoping that these are resolved when AT&T re-pushes the update. I'm planning to get the 2015 X but wanted to hand this one down to a family member. I can't see doing that with these issues.