I was talking about JoWood's version, which should contain a poster inside the DVD case. The rest of the extras -- including the concept art -- should be on the DVD.
I have been in touch with JoWood and learned that an early production run of the European release did not include the poster. This was accidental and they are going to rectify it for the customers who were affected. When I hear back from them who you guys should contact about the missing poster, I will post the information here.