Rogue One: Poster & Official Featurette (Revealed at Star Wars Celebration Europe #SWCE)

Unveiled at the Star Wars Celebration Europe 2016 just are a poster (via for "Rogue One: A Star Wars Story", and a "Official Featurette" for this Gareth Edwards-directed feature film, scheduled for a release on December 16, 2016.
STORY: "Set shortly before the events of A New Hope, the story will center on a group of Rebel spies on a mission to steal the plans for the Galactic Empire's new weapon, the Death Star."