The Next Web
Google changes how it measures Android version adoption, sees uptick in Jelly ...
Google routinely gives monthly numbers breaking out the adoption of various versions of Android, but the company has now changed the way it calculates those numbers — providing a distinctly different portrait of the Android ecosystem in the process.
Android Jelly Bean Hits 25%, ICS at 29.3%, Gingerbread 39.8%
Google changes Android dashboard numbers to count active users, not just pings
Android dashboard update shows data based on active users