I've been waiting a while for this, and it is finally released - the Kreo Encyclopedia with exclusive Orion Pax Kreon.
Plus an electronic Optimus bust (about 10cm tall) & 48 page mini-book.
Prices at Amazon (could be cheaper at Book Depository), are US$14 for the Kreo book and US$11 for the Bust & book.
If looking to buy either or both, the Ultimate Pop-Up book (released in October) is still available for $27... which is VERY nicely done, with just about everything transforming.