Yeah I know about the inkplate, I might get the 10", or maybe they will do a 10+ analogously to the 6+, but I'd like an even bigger one. The ipad pro that everyone wants is 12.9" and a letter sized sheet of paper is 14" so I'd want to start up in that range, for reading stuff like arxiv pdf's.

I do know about epaper shelf tags but that is pretty niche imho. Not that many of us are involved in stocking store shelves.