Well it appears as though the company that makes the e-paper displays used on e-book readers I’m so fond of is making some real advancements. E Ink just showed off some of their new displays at the Society for Information Display conference. The linked article includes a video demonstrating some color displays (nowhere near as rich of color as current LCDs produce of course) as well as flexible displays. By the looks of the opening demonstration they have upped the refresh rate (the display was showing what was being written is damn near real-time).
It’s pretty cool stuff. I would love to see color displays come to e-book readers in the near future.