Prototypes of flexible eInk screens that roll out and retract have been kicking around for years without making it to the commercial marketplace in a big way, but now the Dutch company Polymer Vision says that its Readius device will be on the market this fall in Europe (and in 2009 in the US). The grayscale reader offers a 5-inch flexible eInk screen that unrolls from a plastic housing to display about 22 lines of book text. A final price has not been set, though the company says it will sell for more than the Kindle. NYT