That trailer is kick-ass! I'm really looking forward to this movie.
I don't think I'll see it in 3D but I think we can pretty much expect many, if not all, big even films like this will get the 3D treatment in order to pull some extra box office bank.
Plus, it's the new toy to play with. It's like everyone that ran out to put bullet time shots into their films, television shows and commercials after The Matrix came out. They even put it to work in a couple NFL stadiums. Now you don't see it that often unless it's done as a joke. I don't think 3D will be the same way, but I think at some point the newness will wear off and you'll see it reserved more for movies filmed in 3D like Avatar than just converted to it because the producers could afford it.