Take this with a grain of salt, but I've seen a couple comments on separate boards (one theme park related, one film score related) reporting that Bruce Broughton will be scoring (or has already scored) the new ride film, utilizing Jerry Goldsmith's thematic material. Broughton's no stranger to great theme park music, and - if true - having him re-adapt Goldsmith's stuff sounds like the best possible outcome (short of just reusing the original cue).