According to a leaked document that TmoNews got a hold off, it looks like a few devices are on the list to get the next version of Android everyone has been desperately waiting for. According to the document Android 4.0 ICS is scheduled to be released to the Samsung Galaxy S II on May 14th and Amaze 4G and Sensation 4G on June 6th.
Unfortunately there is no way that we can tell if the document is genuine or accurate since the HTC Ville or the codename for the One S is mentioned on the document which seems to be outdated.
HTC Amaze 4G
HTC Sensation XL
Samsung Galaxy S II