Here’s something to keep you interested while we wait for the new color ereaders to ship. A couple days ago E-ink announced they are developing a larger color screen to be used for station signs in mass transit systems.
The new screen panel uses the ACeP (Advanced Color ePaper) tech, and not the Kaleido tech that will be used in the new color ereaders. ACeP uses multiple inks, and takes too long to refresh to be used in mobile devices, but it could be used for signs.
Although I don’t see any reason why you would (aside from thinking it would look cool).
This story inspired me to check with a construction manager I know, and they told me that they couldn’t imagine why anyone would use this kind of screen. They also could not name any display systems supplier that even offered E-ink screens as an option (which means it’s not being used in anything more than small-scale pilot projects).
It would look cool, though.