Yes there are some flexible displays on the market and more coming out. The first was the Wexler Flex one 6", then you have the Sony DPT-S1 13.3", next are likely to be the Earl 6" tablet and a 3.5". Read about them in our wiki along with the
E Ink Mobius page. Click on the link above and then on the left see "What links here" to find all the appropriate pages.
Dale