Things are selling out quickly as its only been a few minutes for the new pre-orders this week to go live on the GW webstore. Right now as I speak its only the softcover campaign book that is already gone, but I would imagine the hardcover will be gone soon. Its probably important to note that the softcover is only temporarily out of stock, and not gone for good.
Link to get your pre-orders in.
http://www.games-workshop.com/en-US/
Campaign Books
Shield of Baal: Exterminatus $74.25
Shield of Baal: Exterminatus (Softback) $66 Temporarily out of stock
New Models
Blood Angels Terminator Assault Squad $60
Blood Angels Librarian in Terminator Armour $30
Digital Releases
Art of Shield of Baal (Interactive Edition) $32.99
Shield of Baal: Exterminatus (Interactive Edition) $59.99
Shield of Baal: Exterminatus (eBook) $44.99
