It's out! After some delays the final Metabarons graphic novel was released on Aug. 4th. I haven't gotten to my FLCS yet, but it should be available there. Or I may save the gas and get it at Midtown Comics.
It's good to finally have the concluding part of this saga. Next I hope we get more of the Technopriest story. The second Technopriest book ended with a "To be continued" so we should be getting a third volume. I just hope the wait won't be as long as it was for this one.