I have been waiting for a good Pixel Qi device (in any form factor, really, although a 13" ultrabook or 7" tablet or 4" phone is ideal) to emerge for several years, as it seems a good compromise between utility and readability, although E-Ink appears much better to my eye.

As we've seen with the GS3, though, what people really want are bright and oversaturated displays for occasional media use, rather than the 99%-of-use task of monochrome reading and browsing.