The AT&T HTC One Mini is set to receive the Android 4.4 KitKat update this week. This news was confirmed by the Executive Director of Product Management, HTC USA earlier today. The update for the AT&T HTC One Mini includes Sense 5.5, and not the latest Sense 6.0 that debuted on the new HTC One yesterday. However, a future update will bring the latest Sense to the HTC One Mini. All you got to do is wait a little longer.
AT&T HTC One Mini Owners - We have received technical approval for Sense 5.5 + OS 4.4.2! OTA expected end of the week. Thanks!— Mo Versi (@moversi) March 25, 2014