What I see here with the X1D is the second enterprise (after Leica) to create a fully integrated MFD system (one OVF, one EVF), good-bye to good old modular concept which traces its origins back to film era, where interchangeable backs made a lot of sense. P1 (with Mamiya and Leaf), Hasselblad and Pentax share this slow and evolutionary transition process which worked as disincentive to disruptive thinking.
This is kind of sad for tech cam guys but I think the days of separate digital backs are counted. Same holds for modular viewfinders (the new waist-level finder is called articulated LCD with touch functionality). And if you ask yourself nowadays why the H/XF/Z have to be that big and heavy as they are, you should be looking forward to theses changes.
What has not been discussed yet is the new lens line. Hasselblad made it quite clear that THEY designed them. The production process is in Japan and this works in the same manner as Zeiss with Cosina. I remember, there was a similar discusion to what degree the HC lenses are from Fuji. Hasselblad stated that they are own designs, only produced by Fuji. So, again, we see a kind of vertical integration under one roof. This is quite remarkable considering the impressing MTFs.