Here's the latest look at the breakdown of Android operating system versions -- fragmentation, if you will. More than a quarter of Android devices are now running Android 2.1 -- that includes the Droid, Nexus One, Legend and Desire. A goodly number -- 38 percent -- are still on Android 1.5, and Android 1.6 makes up nearly 32 percent of the gene pool.
By comparison, way back in December, Android 1.6 led the way at 52.2 percent, followed by Android 1.5 at 27.7 percent, and Android 2.0.1 (which had recently been released for the Droid) at 14.8 percent. [via Android Developers blog]