It's the final book. It's coming out in 2012. I'm okay with it (even though it contradicts the "trilogy" scheduling announcement from several years ago).

However, if it suddenly becomes the penultimate book in the series because of "binding" reason or whatever, it'll be time to rage.

He seemed like a pretty cool guy when I met him. Even drew a little picture for me in my DragonCon program.

If it was my decision, I'd use his last piece of concept work with a new artist finishing it up simply because it's reminiscent of RJ dying and Sanderson finishing up his concept. It'd be appropriate.