HTC VP of Product Management Mo Versi announced on Twitter that the Marshmallow updates for both AT&T-branded devices has been delayed. Fortunately, it’s nothing big, as HTC is hoping that they will gain approval in the next few weeks.
Hold tight, because the updates will come. It’s just a shame it’s taking so long.
HTC One M8 & M9 AT&T owners – there’s been a slight delay on M OS. We’re in lab but looking at approval within the next couple weeks.
— Mo Versi (@moversi) April 29, 2016