In a press release on October 2, HTC stated that the HTC One X
and HTC One S would begin receiving a Jelly Bean
update sometime this month. It seems the process has begun for the HTC One X, with users in Taiwan and Singapore reporting on the XDA Developers
forum that they have successfully updated to Android 4.1.1 with HTC Sense 4+. According to one user, as well as the screenshot below, it's version 3.14.709.16, and is 353.87MB in size.