I'm not sure why it took us so long to figure this out, since Powell's Books and Dark Horse Comics are both, like, right down the street, but word comes via Pop Candy that over at the Powell's Blog, artists for Dark Horse are blogging it up all week. They've got Slow Wave's Jesse Reklaw, The K Chronicles' Keith Knight, and Achewood's Chris Onstad (hey! we interviewed that dude!), amongst others. Check it out here.
Artwork above from Onstad's post.