HTC was supposed to push out the official Android 4.1 Jelly Bean update for the One X in October, according to official wording from the company at the time of the HTC One X+ press release, but only one month ago, at the end of October, did the Taiwanese manufacturer deliver the refresh to some devices in Asia.
“Better late than never”, they say. HTC One X owners in Europe, Asia and South America should be on the lookout for Jelly Bean on their unlocked phones with CID_038 and CID_044. After the update process, which contains two stages (a smaller file and the main refresh), you will have Android 4.1 Jelly Bean with the latest HTC Sense 4+ so make sure to manually check for its existence.
As far as carrier models are concerned there is no solid information yet and we’re left with our fingers crossed.