The researchers at Maryland and Berkeley Universities in the States have clearly done a lot of in-depth research and come up with a concept which improves on the Kindle, by basically sticking two Kindle's together to make it look at bit more like… A BOOK.
Make it book-like
The basic idea is clearly to make the e-book more book-like so that user's can flip through pages, compare different documents at the same time, or flip one side behind the other for ease of use on the train or in bed.
You can see a video of the prototype with two displays being demo'ed over on the New Scientist's site.
If you want to know more then you can read the full paper outlining the research behind the e-book prototype that here (pdf link).
More news on Amazon's plans to launch the Kindle in the UK very soon.