Mark Gurman posted an article on Bloomberg, in which he claims that Amazon is developing a Kindle device with a foldable screen. Or, at least, that such a device is under an "internal discussion".
Last month E Ink demonstrated its latest foldable and rollable ePaper displays, which you can see in the video above. It's not clear how close are these display to commercialization. It isn't a big surprise that Amazon is testing these displays and considering a foldable Kindle.