May the force be with you
Really. I really want you to be with force which can hold you tight. Espacially for StarWars fans. Because in April 8nd,few weeks ago, Lucasfilm released new prequel series of starwars which is started by this Rogue One: starwars story.
According to the films, the story's time background is based on the past before the Episode 4: New Hope( story about Luke skywalker's adventure)
Still, whether Darthvader will perform or not is uncertain.

As you can see the video, there are stormcroupers and death star.
One interesting point is that there will be no jedi in this movie.
Although there was a man who uses stick as though using lightsaber, but its not certain that there would be never force sensatives or using lightsaber things.

As there are actually not much imformations that have been told,
there are some supposing that story would following the line of animation Star Wars: Rebels(connection between episode 3 and 4).

This film is dark war movie and will be released in December 16nd.
Carefully, I expecting this film would contain evidences about Supream Leader Snoke who is the main villan in Starwars Episode 7: the force is awaken.