e-ink screens that are available for the RPi (£45 is not really cheap but

3D Printing
,
1

e-ink screens that are available for the RPi (£45 is not really cheap but hey, they use no power when idle, and I find it so hard to source anyway).
Got the link through a G+ post I can’t find anymore.
http://www.percheron-electronics.uk/shop/e-paper-hat/

2

Does this act as a framebuffer display when hooked up?

3

E-Ink is more like printing than a framebuffer.

4

This seems to be a good starting point, with source code http://repaper.org/ and https://github.com/repaper/gratis

5

There was a Kickstarter campaign. They will soon deliver: https://www.kickstarter.com/projects/pisupply/papirus-the-epaper-screen-hat-for-your-raspberry-p

you should be able to order soon from here: https://www.pi-supply.com/