See also the toplevel.

From a hardware perspective, this is going to be the most difficult part. I'm eyeing the ED133UT2, but it looks like I'll have to source it from some random vendor on the internet, as the doesn't sell these individually. I could get a dev kit, but that's prohibitively expensive. The bare display module is something like $450, making it possibly the most expensive part of the system - and I don't know how well it'll interface with a given system board.

I chose the ED133UT2 based on a cursory investigation into tablet eInk displays - it seems to be what's in the Sony Paper tablets.

I'll probably have to settle for a TFT display scavenged off eBay for the first few iterations of the hardware.