For the first time, Android 2.1 took more than 50% share in the leading Android OS version in the market. Android 2.1 is on 55.5% of all Android devices currently in the market.
Android 1.5 and Android 1.6 together sums up to 41% of all Android phones in the market (Android 1.5 with 18.9% and Android 1.6 with 22.1%). Android 2.2 made its mark as well with 3.3% share amongst all Android devices.
This graph will change soon during this quarter because many phones with Android 2.1 will be updated to Android 2.2 and few Android 1.6 phones will be updated to Android 2.1. The Nexus One is the only device with Android 2.2 from an official update.