I don't know, but when it comes to editing photos out of my DSLR, I want the biggest screen possible (and matte), not some kind of tablet size glossy screen that reflects everything around.
Matte can be added onto an iPad with a screen protector. My iPad Pro is by far the best quality display I own. It’s definitely smaller than I’d want to be confined to all day, though.
Edit-I wish they’d release an oddly large iPad Pro. I think some interesting use cases might exist in the 24”,30”,higher screen sizes. Not unlike LFD displays.
