The Mirasol screens have some of the properties of E Ink. You can see the screen without a backlight, and that helps improve outdoor visibility greatly while consuming much less power than a typical LCD display. The screen also has a much faster refresh rate than a typical E Ink screen, making it easier to interact with on-screen links and menus.
On the other hand, The Digital Reader reports that the Mirasol display will only be able to handle about 12 frames per second, which is well below the 24 to 30 fps you’d want to comfortably watch video on this kind of device. So don’t expect miracles from the PocketBook Mirasol. It’s still just an eBook reader at its core.
Update: It looks like the PocketBook Mirasol won’t be available until the third quarter of 2011.