Food for thought...
Let's keep in mind that any new digital specific body is not confined to perform to film specs... IOW a current Mamiya 645 *lens* has an image circle of roughly 72mm -- and that IC would currently fill a 50mm x 50mm square sensor if the shutter box of the camera body were reconfigured to let it through.
However, the fact we know we're getting a vertical grip for the next Mamiya body eliminates that consideration from a practical standpoint -- but it remains something they could certainly plan for going forward *IF* the shutter box gets optimized.
Cheers,
Let's keep in mind that any new digital specific body is not confined to perform to film specs... IOW a current Mamiya 645 *lens* has an image circle of roughly 72mm -- and that IC would currently fill a 50mm x 50mm square sensor if the shutter box of the camera body were reconfigured to let it through.
However, the fact we know we're getting a vertical grip for the next Mamiya body eliminates that consideration from a practical standpoint -- but it remains something they could certainly plan for going forward *IF* the shutter box gets optimized.
Cheers,