The guys at XDA are doing an amazing job to bring the new version of Android 4.0 Ice Cream Sandwich multiple terminals possible.
In addition to the fully functional rom based precisely on ICS for the Galaxy S2 , now comes the news of the first ROM-based Android 4.0.3 for the HTC Sensation XL . The Rom author, however, clarifies that it is an essential port, free of' interface to SENSE and 'integration kernel .
The work, however, is very well done, as you can see from the video below, and so far the only two non-functional features are the GPS module and the data connection .
More info at XDA