Mashable: "My $99 Logitech Revue was just upgraded to the latest version of Google TV. My “go to” tablet these days is Amazon’s $199 Kindle Fire. These are both Android devices and are examples of the platform’s recent fragmentation.
Android fragmentation highlights include:
5 OS versions on devices (Donut, Eclair, Froyo, Gingerbread, and Ice Cream Sandwich)
Devices in various sizes, from small phones to TVs
Device manufacturers branching their own versions of Android
Amazon’s Kindle Fire is an example of a device with a manufacturer’s custom version of Android. This splintering has caused real concern among developers."