nope, No mothership as yet, the one in the pic is apparantly very solid, and very heavy, Matt advised they are trying to revise it as a hollowed out model to reduce weight (personally i think this should also mean a reduction in price)
If and when the mothership is actually going through production, you will know, because allegedly i'll get one of the first ones produced, and you will see me singing from the treetops after my 18 month wait. . . .