Ever since the announcement of a new Star Wars movie the project has been clouded in mystery and secrecy, as often is the case with J.J. Abrams projects.
Sure, there have been some leaked set pics but we basicly still don't know anything about the story or even who is supposed to be who in this new Star Wars movie.
It's very well possible that after tomorrow (November 28), when the first 88 seconds long teaser trailer will see the light of day, we still won't know anything about either the story or characters. For all we know the teaser is going to be one long shot of a Womp rat running through the Tatooine desert, or perhaps it wont even show us any images and will only contain audio and show some written text on the screen.
But no, I'm more hopeful than that and here is, what in my opinion, we are likely to see in tomorrow's first Star Wars: Episode VII - The Force Awakens trailer: