My wife's HTC One X got her update today, after I tried to "Check for Updates."  Worked like a charm.  We didn't have to Factory Reset her phone like we did mine.

I should note that my battery life has been vastly improved because of the update.  I don't know what voodoo they worked with Android 4.1 on the hardware, but it's quite a bit better, especially with "Battery Saver" enabled.