Artbomb has cover images and Ellis-hype for Apparat, Warren Ellis's set of four one-shots coming from Avatar. (Thanks to Rampage for the link.) Ellis of course has been doing trashy horror-suspense titles with Avatar for some time, so it'll be interesting to see how his more substantive works fly there.
I'll probably end up getting all four books (depending on cost...), but the one that excites me the most is Frank Ironwine, mainly becuase I love Carla Speed McNeil's work and it'll be good for her to get more exposure. Quit City also intrigues, due to the strength of the concept (pulp aviators!) and the very interesting art style of the cover; I'm unfamiliar with Laurenn McCubbin but based on that single cover image I'm keen to see more.