If its a 1D body, being really the replacement for the 1Ds3, then cost will be pretty damn high.
The starting point for medium format digital has fallen a little remember. Get what Im saying? Yes I know the starting point only gets you 22mp or so, but those 22mp used well, will annihilate a D800 for instance. Plus a Phase One will flash sync at 1/1600th second (leaf shutter) or a Hasselblad at 1/800th sec.