SilverWook said:

Even though it was shot on film, it's not going to look like a film made in the 70's or 80's. Film stocks have changed, and cameras/lenses have changed.

They probably didn't even stick pantyhose over the lens while shooting in the desert. ;)

This not not necessarily true that the film stock absolutely dictates the shot. It depends on how the director of photography chooses to make the shot. Also once the shot is done they can go in and digitally give it any look they want.

For instance, in episode 1 during the final light saber duel, when they first enter the reactor room the whole shot has a smeared light look to it. Now you could say this is because of the lighting of the reactors but I think it gives the scene a particular 70s look to it. In the late 70s this smeared light shot (imagine someone smearing Vaseline on a lens to get the idea) was everywhere. I think they processed that sequence as a nice throwback to the real episode 1 from 1977.

Anyways, the live action segments of the trailer might as well have been shot by Michael Bay. I'm surprised its even done on film as it looks like something done with a Red HD cam or something. Maybe ep. 7 has a poor DP?