Well, there did seem to be some original background art in the samples, specifically another angle of the lithium-cracking station's exterior behind the landing party. That looked like a CGI image. And of course the characters are newly composited against sets they never occupied onscreen, at least not in those uniforms.
I do wonder, though, if these stories will all be limited to featuring characters we've seen onscreen, and extensively enough that there are a lot of angles of them to choose from. What will Byrne do if he has to introduce a new character?