13 Coins, coming in October from Titan Comics, is written by Martin Brennan and Michael B. Jackson (screenwriters of Hitman: Absolution) and illustrated by Eisner award-winning artist Simon Bisley, with colors by Ryan Brown. We've been giving it plenty of attention here on Bleeding Cool due to the rather impressive artwork, for starts.
Titan describe the comic as:
13 Coins is the story of John Pozner, a tormented ex-con on a quest for vengeance, when he discovers that he is descended from angels, and is the living key to Earth's future, or Heaven's fall.
The special Ashcan that's being released for free download includes: special pencilled art pages, pin-ups, exclusive essays and character bios for the comic. You can download that for yourself, free of charge, here.