Tonight Club Penguin unexpectedly updated their treasure book! They added a new page containing six new items. Towards the end of the book you will see the page pictured below. On the left is the Up and About wig, Leather Bracelets, and Daises and Denim outfit. On the right is the Sandy wig, Around Town Outfit, and Sunset Party Outfit.
In order to obtain items from the treasure book you need to redeem a treasure book code which comes with select Club Penguin merchandise or the Club Penguin magazine.