HTC One bothers and sisters on T-Mobile, your Android 4.3 is finally here. The Android 4.3 update has begun to roll out to Tmo users with an HTC One, so I would advise you to check your system updates frequently today. My feed has blown up with screenshots showing off the update screen, and all those users have used many exclamation points to signify how happy they are. So if you have not received the update yet, keep checking throughout the day. It does take time to get to all users, so be patent. Let us know if you got it already.