In the video above, you can see that the CyanogenMod team are working hard to bring you Ice Cream Sandwich on the HP Touchpad. This early build still has a few kinks to work out, but if their previous success with Gingerbread is any indication, then it won't be long before we are enjoying some ICS tastiness on the tablet. Here's a quick quote from PhoneArena with some details,

Almost every single one of the tablet's features are in a working state at this time, with the camera functionality and video playback being the only major things that need to be made functional. Once that gets taken care of, we should expect a CyanogenMod 9 release for the HP TouchPad to be made available for download. And the guys are saying that it likely won't be long until that happens.
This is pretty awesome news for fans of the "little tab that wouldn't die."

Source: HPTouchPadForums.net via PhoneArena