Highlighted by Collectors Corner of Baltimore on Bleeding Cool, this was a prominent error to a rather expensive book, and the shop despaired of getting corrected copies. Clearly, DC has stepped up.
Retailers must send a specific page from the book and return them, in order to receive replacements. They then have to destroy the copies.
Those who have bought copies should talk to their retailers fairly sharpish. Replacement requests must be received by April 3rd in order to get a replacement copy later that month.