I'd be shocked if it were anyone other than Williams or Giacchino. I'd be fine with either, with a nod toward Giacchino. I love his work on Super 8 and thought he did a very nice job on Star Trek. I think it helps (or can, at least) to have new ideas for an established franchise.

Regarding the comment that Williams was at his best from 1975 to 1985; That may have been his most prolific, but I think his work on Memoirs Of A Geisha may be his finest hour.

John Williams writing with Itzhak Perlman and Yo-Yo Ma performing = When Worlds Collide.

http://www.youtube.com/watch?v=SPOq4HiCeTw