According to research group Piper Jaffray, worldwide Kindle revenues will more than double in the coming year, as eBooks finally come of age as an alternative to paper versions. It seems Amazon won't have it all their own way though, with more an more apps for the iPhone giving that device eBook functionality (on top of its already hefty feature list - phone, camera, ipod, gaming machine, GPS, Internet browser). The latest, Eucalyptus takes the design interface to a new level, with the touchscreen literally used for page-turning.