[netcan]

I think the problem would be that e-ink would require special UIs that have no moving part, don't rely on scrolling, don't rely on colour, etc.

I think "mobile web" has taught us that. Increasingly we are finding that our toaster can run firefox and our heating system can run word but Firefox and the websites it displays weren't meant to run on a toaster.

[mistercheese]

Yes, I agree. "e-ink" optimized apps would probably have to happen for this device. (Pagination instead of scrolling, buttons instead of swiping...) However, these days some displays are getting 30fps (I don't know about latency), so at least animations might be possible. I don't know about the hardware limitations, but it seems hard to imagine the responsiveness of e-ink won't improve enough.