Plastic Logic are working towards a flexible E Ink display based E--Reader, and they say that they will start making the displays soon. The reader itself is expected to be available at the beginning of 2010, for about the same price as the Kindle.

Even though the display is flexible, the product itself will not be - as people do not really want a flexible display - they are afraid it will be easily destroyed... So this will be a regular E Reader, with a plastic based display.