This is extremely exciting for me as a MFD tech cam owner. Much more exciting than Phase One's new camera body.
For each sensor generation tech camera wide angle and movement support has become worse, it's not been a good trend. It was even looking likely that Rodenstock Digaron could be semi-obsoleted by next generation CMOS (according to me they already are with the current CMOS, but that's a different story) like Schneider Digitar wides were semi-obsoleted by Dalsa 6um.
In fact, I've been thinking that my current CCD may be the last MFD camera I own because it has seemed that 135 and MFD is converging to the same type of lens designs and sort of similar camera designs, some sort of mirrorless with limited movements. I know many love the ALPA FPS, but that's not my idea of a tech camera. I want large format style view camera with rich movements and preferably symmetrical lenses, and when we have live view it's just so perfect, but the CMOS haven't been able to do movements or wides. If ALPA FPS type of camera is the next logical step due to sensor limitations I rather use 135.
And voila, BSI is coming to a larger sensor than ever before, and made by the only CMOS MFD provider, Sony. Maybe it will be in next generation MF CMOS. There's hope again. It's still unseen if BSI really gives us wide angular response in practice (it's not the reason they do it, it's for sensitivity, wide angular response is just a side effect), but it's quite likely. With Actus cameras etc we'll be able to test it using A7rII.