i remember reading on the anniversary cake thread that the mini castle cake choices are vanilla, chocolate or cheesecake
and the fillings are either vanilla or chocolate mousse
the frosting, i'm not sure of - white buttercream?
someone correct me here if i'm wrong - you could try going thru all 230 pages of the thread itself to find out (might take a while though!)
i'm planning to order this myself when we eat at narcoosees in december (all white: white frosting, white filling and white cake!)
as far as the slipper dessert, i don't know - i think the filling choices are also either white or chocolate mousse (at least those are from the photos i've seen on this board of the slipper dessert)