Clearly that's interesting progress around this kind of display. This should make it easier to create devices using them going forward.

This is a cool project, not too expensive as well.

I agree with this. They are very interesting devices. Not necessarily easily hackable yet though. It's definitely getting there.

Very interesting story (even though it feels a bit like advertisements at times) about the quest to get color into e-ink displays. Goes on to explain a bit of the technology behind those.