Star Wars has several spin-off movies planned. One of them is Rogue One: A Star Wars Story. Directed by Gareth Edwards (Godzilla, Monsters), it stars Felicity Jones (The Diary Of Anne Frank), who leads a group tasked to steal the plans for the Death Star. The movie is set before the events of the very first film in the series, and will open in December 2016.
To whet our appetite, the official YouTube page of Star Wars has released the first trailer for the movie. If you're a big SW fan, make sure to watch it!
Rogue One is the first step in realizing the franchise's goal of emulating Marvel's expanded cinematic universe. After this one, there will be a Han Solo spin-off in 2018, sandwiched in between Episode VIII and IX of the main Star Wars franchise.