It looks like itís the HTC Thunderboltís turn to have a little taste of Ice Cream Sandwich. Jdkoreclipse was able to get the pre-alpha ROM booting but unfortunately, not much else is working at the moment. In fact, without a Google releasing the source code, not even the touchscreen is functional. Itís like looking through an ice cream shopís window but not being allowed in. Hereís to hoping the dev can work out all the kinks ó well, at least the major ones.
SOURCE: [ROM][PORT][WIP][DEV] ICS Tbolt port Prealpha 1 - RootzWiki