These may be images from the hour-long sneak peek, they may be from Comic-Con, or they may be from completely original footage. Here's what the poster said about them:
It's now less than a week until the sneak peek, but I can't figure out why Cartoon Network keeps using stuff from the movies in order to promote the show. I may be wrong, but I don't think Nickelodeon did that with their DreamWorks shows. I could understand them doing that months ago, but it's about to premiere and they have plenty of complete footage. The show holds up well enough on its own anyway. At least it does look like they're going to start using in-show stuff on the website promotions, as is evident by these screenshots. — SourceThere's a good chance they are from the Cartoon Network site because of the cloudy background, but no one on the Night Fury's Den has seen it yet.
We'll update when more is found.
Thanks to skrill!
UPDATE: Here's the video (thanks to skrill!):