Update: It turns out that what I thought was the tentative cover is the final cover after all. It was decided that the more elaborate cover design I’d seen sketches of, which would’ve featured the faces of the main characters as well as the clock image, wasn’t working out aesthetically, and most of the characters wouldn’t have been recognizable to book buyers anyway. So they decided to go for something more abstract. The “cast photo” approach was basically my suggestion, since I thought it would help to give the readers a visual reference for these mostly new characters, but I guess it would’ve been rather cluttered, and this purer image is probably a lot more striking. Cliff Nielsen is the artist.
As for the error in the blurb (implying that DTI is part of Starfleet), I’m told that will be fixed on the site, and if possible on the final cover.