Project Butter for lag-free UI responsiveness, Google Now for the latest information you want when you want it, and the Notifications enhancements that allow you to take action right from your notification page. In addition, you will be able to view full SMS messages and MMS photos from your notification page.
Also coming is a new countdown timer for the front-facing camera to help you better take self-portraits. Keep your documents, photos and videos safely tucked away in the AT&T Locker, the carrier's name for its cloud-based storage offering. AT&T DriveMode will automatically send a text message to those trying to call you, text you or send you an email when you are in a vehicle moving faster than 25MPH. And AT&T Messages is a universal in-box for your texts, calls, and voicemail messages.
Ok, so none of these features will be on your AT&T HTC One X today, but it does give you something to look forward to.
source: AndroidPolice via DailyMobile
Well folks, it seems that Jelly Bean is a go for the veteran smartphone, seeing that's the official word from AT&T. As always, you can snag the update by clicking on the "Check for updates" option in the Android settings. Be merry folks, be very merry right now!