This is an update for X²: The Threat version 1.0 or 1.1, it will update it to version 1.2
European users do not require this patch.
Features Include:        - Graphic cards with more than one monitor connected can open special resolutions which are two or three screens wide
        - Added support for EAX (activate at startup)
        - Re-adjusted fighting AI: Ships fighting in remote sectors
        - Added slider to input settings for Joystick sensitivity
        - Improved quality of audio streaming
        - Improved loading speed of new sectors
        - Added technical details screen about ships when buying a new ship from a yard (open with "i" or "u")
        - Added various tips to help inexperienced players during the plot missions
More information is located inside of the readme file that is packaged with the download.
Attention: You do not need the 1.1 update to install this patch.
See 
this FAQ page for more information.