The latest Android Developer numbers are in and Android Jelly Bean continues to steadily makes its way onto more Android smartphones. It now accounts for 40.5 percent of devices that visited the Google Play store for the two week period ending on August 1st. This is up from 37.9 percent less than a month ago.
Meanwhile, Android 2.3 Gingerbread, the second most common version, continues its steady decline. It fell from 34.1 to 33.1 percent in the same period.
Older versions going as far back as Android 1.6 Donut continue to persist albeit in tiny numbers.
As for the latest version of Android, 4.3 Jelly Bean (announced in the latter part of July), it has not even cracked the list yet. That should change by the time new numbers are published as the new Nexus 7 (2013) tablet is now shipping and 4.3 updates are now hitting the older Nexus 7 and Nexus 4 smartphones.
Keep in mind that Google’s new way of tracking Android version distribution only records devices that visit the Google Play Store. It very likely under-represents older versions of Android.
Source : Android Developers