It's something that Paramount has shown interest in at various points. They originally were going to try an elaborate up-conversion of the video source but that proved futile (no doubt due to the rather poor quality of those tapes). It was mentioned at a convention recently that this is something they are still interested in. As Covetom said though, it would be difficult and all the FX shots would have to be redone. Eventually though, I think it's inevitable that it will happen.