This was posted on the 26th of Dec'2007 over at the official site.
They're giving you an original K poster, with them releasing only 500 copies of them, to those who's ordering any of these jewelleries now. The button at the bottom right directs you to the registration form to order. The bad thing is only those living in Japan can order since they're not doing overseas deliveries and so is only made available in Japanese stores =/
But damn the crosses look hot! *_______*
S O U R C E