As it was promised HTC has started sending out the OTA update that brings both Android 4.2.2 and Sense 5 for the AT&T branded HTC One X today. The latter includes BlinkFeed,which brings you your news and social media feeds. Also included is an updated Gallery app, Video Highlights, Music Channel and Miracast. NFC and address book problems are also fixed with the update.
So what are you waiting for going to All apps > Settings > AT&T Software Updates > Check for updates > Ok. Make sure to have your battery charged before the update cause it will take approx 30 mins. And if you dont find your update you'll have to wait one day more because the update has send out on a staggered basis which means not everyone will receive it at the same time.