I have been able to go over and spy on him as he has been working on the show a few times in the past few weeks and it is looking really great. (He did most of the show with his arm in a sling. See example here.)
He has posted a lot of progress on the paintings on his Lightnightrains blog as well as the back stories to these images. One of my favorite aspects of Cory's work is his really wonderful sense of color theory. These thumbnail color comps for the show are really splendid:
This show will be rather unique in that he will be displaying a lot of this developmental material at the show itself. It should be a really great insight into how he develops his images. I'm really looking forward to it.