DC has posted Ryan Sook [edit], Fernando Pasarin and Joel Gomez’ full Brightest Day image, featuring the twelve resurrected characters as White Lanterns. It’s made up of variant covers appearing on the Brightest Day-related comics this month and next, all aligned to create one complete picture.
There are two Flash-related characters in this set. Professor Zoom appears on the alternate cover for Green Lantern Corps #51 (posted here last night). Chances are that this Captain Boomerang will be the varaint cover for The Flash #5, currently due September 15.
Click through either image for the Source article, which includes a much larger version of the combined image. You really do have to see this thing full-sized.
Update: The Beat points out that the piece is inspired by Michelangelo’s famous painting on the ceiling of the Sistine Chapel. Also, I forgot to include Fernando Pasarin, Joel Gomez, and Jim Lee in the credits. If I’m reading the Source post correctly, Lee did the overall design, Sook did the figures, and Pasarin and Gomez did the cosmic scene in the center (and possibly the thrones).
Update 2: Comics Alliance has an analysis of the image.