Unlocked M9 support at&t VoLTE?

[rickms80]

The only reason I ask is because HTC had the unlocked A9 certified to use at&t's VoLTE. It's probably the first unlocked phone, that I know of, that is able to use at&t's VoLTE. So i'm curious to see if anyone on the unlocked M9 is seeing VoLTE on at&t or not.