HTC is currently Rolling-out the One X ICS 4.0.4 Update to the Unlocked Middle-East devices, The update brings the firmware version to 2.17.415 and HTC Sense 4.1 along with some other enhancements.
Here is HTC Official Press Release about the update:
As part of our ongoing commitment to ensure customers are receiving software updates that improve their user experience, we are pleased to announce our next upgrade for the HTC One X will be released on August 10th.
The primary update will include an upgrade to Android version 4.0.4 (Ice Cream Sandwich), in addition to an improved Sense experience which will: enable the ability to map menu function to the 'recent app' key (improving visual presentation in non ICS apps like Facebook); improve tab management in the browser with a dedicated tab switching button and enhance camera capabilities such as white balance and continuous autofocus. Furthermore, customers can expect enhancements to memory, platform stability and the overall browsing experience. Other improvements include a Single Sign-On for Facebook allowing user access across applications and browsers and upgrades to Beats audio, which reflect our dedication to providing an authentic sound experience.
From a developer perspective, we are expanding SDK support for Media Link and providing a framework for video call applications to achieve improved performance and quality.