Battlefront art: http://escapethelevel.com/art/art-of-star-wars-battlefront-anton-grandert-162/
Rogue One art: http://conceptartworld.com/news/rogue-one-a-star-wars-story-concept-art-by-vincent-jenkins/
More Rogue One art: http://dimmerlightstudios.com/blog/?p=1499