It has been reported that the Android 4.0.4 update is being pushed to unlocked HTC One S devices all over Europe through OTA. This comes about a week after the One X got the same update. It bumps the version of Sense to 4.1, which is a big update. This should fix some bugs, make the camera faster, and if it’s anything like the update for its bigger brother, it will add the option to make the app switcher key a menu button to get rid of the black bar at the bottom of the screen on older apps. This is a lot more important on the One S, considering it’s a qHD screen with much less screen real estate.
They also included EA Gamebox, a piece of bloatware. Unlocked devices usually don’t get bloatware, but I guess EA struck a deal with HTC and is paying them a good sum. Just ignore it if you don’t like it, no big deal.
If you want to go check for this new update, go to Settings > About Phone > HTC Software Updates > Check. Remember, this only applies to unlocked HTC One S devices, not the T-Mobile variant. Hopefully that variant will get the update soon, and considering the first One series to get it was an AT&T One X, it should come soon.