Not too much new info, but interesting none-the-less.
"New details on K-2SO"
http://www.starwarsnewsnet.com/2016/08/new-details-on-k-2so-from-rogue-one-a-star-wars-story.html
"Star Wars Databank additions reveal new details about Rogue One"
http://www.starwarsnewsnet.com/2016/08/new-star-wars-databank-additions-reveal-new-details-about-rogue-one.html
(At least we have confirmation that Saw is first seen on Jedha. And the attacks on Jedha seen in the trailer and BTS video is therefore most likely one of his “terrorist” attacks.)