I‘m closely watching the E-Ink monitor space. There is already one that looks promising, but it’s monochrome and small and there’s still a lot of lag: https://youtu.be/Laa-cN15uGI
I wouldn’t watch movies on that one, but it _could_ be fine for programming already.
With f.lux and macOS‘ dark mode I‘ve noticed how my eyes like low-light UIs better (probably because of lower blue light emission?), and I think an e-ink monitor would be almost zero-strain, just like reading a book.