Looks like AT&T has decided to update their HTC One X+, but it is not the update those users wanted. This is just one of those minor bug squashing updates, and not the next version of Android. This will be v1.19.502.1, and it will still remain on Android 4.1.1.
AT&T Address Book Fixes
Other minor bug fixes
So if you were having any kind of issues with any of those functions listed above, feel free to head over to the HTC support page to download the update yourself. Hopefully the next update will be Android 4.2, but do not hold your breath, since HTC will probably putting most of their focus on their new baby. Let us know if you already have gotten the update.’