Its only a teaser trailer, but its a teaser trailer that hits all the right spots! Episode one through three was like fan-fiction in the Star Wars universe. So far, this looks much more like 2015 sequel to the original 1977 Star Wars.
Thats a desert planet, those are storm troopers, those are tie fighters, there's a formation of x-wings, and that the god damn Millennium Falcon. They all look like they stepped out of the original trilogy, got a subtle polish, and then pushed right into CGI so we could see them do everything the original models and camerawork couldn't manage.