The book is dead; long live the book. Here is a pretty good video of the mirasol screen.
http://www.youtube.com/watch?v=y21xHGrecMk
Is this not the ereader/smartphone/tablet display of the future?
It plays video.
It is color
It is reflective
It is ultra low power
Only negative is you trade off vibrancy of the colors but I think if it doubles or more the battery life, it must be worth it for some devices, certainly ereaders and some phones.
The tech will get better, but even as of now the quality of this screen appears ready for the masses.
Imagine 5 years in the future how this technology is going to be. A basic black/white ereader will be $99 or less and color ereaders with extra features like touch and video capabilities will be under $199....larger versions perhaps $299. To put this in perspective, just one college textbook can cost $199. This color ereader should replace all college text book. The only reason it wouldn't is due to the publishers.
Personally, I think for the sake of the environment, the US congress should pass a law requiring all educational textbook providers to make their books widely available in digital form.