It appears that listing IS a mistake of some kind. It's not even a new ISBN. Expect it to vanish soon.I can get nothing on that. I'm just waiting for Penguin to post their next catalog, maybe the answer will be in there. Hope so.
By the way, do we know anything about this mysterious entry for SilverFin that's been floating about Amazon for some time? The release date is coming up.
Kind of a shame, really. Was hoping it was going to turn out to be something special.