Ah. As we said, this is the first version of the beta. The trailers shows content which did not appear in the beta, because they are slowly introducing it. It makes it easier to point bugs or cosmetic problems. The beta will receive updates introducing the missing content once any problems that are found with the minimal build are worked out. I remember one of the developers being fearful they would not get the beta out in time - it seems that is because they were trying to work it down to the base concept of The Eight Pages and then expand on it again from there.