A question mainly for the UK gamers.

Today in the mail I got a copy of the Disgaea 4 Art Book I found this a little weird as I'd pre-ordered and recieved the game on its release day but yet this was shipped today and the comment in the back of it says "Thanks for buying the Premium version" were as we only had the option of the game only addtion from Game.co.uk.

So did anyone else get this?