Google has stopped delivering distribution information on Android versions 1.6 Donut and 2.1 Eclair as the two don't support the Google Play store app. Since developers mostly care about the phones that do support that, Google will no longer be posting those allegedly irrelevant numbers. Last month the two Android iterations accounted for a mere 1.3% of the entire platform customer base so it's not a big loss anyway.

Also Google now shows devices that have pinged the Play store in the last 7 days as opposed to 14 like before.

Anyway, Jelly Bean keeps rising (all three sub-versions of it) and now accounts for almost half of the Android distribution (45.1%), while the other most popular versions Gingerbread and Ice Cream Sandwich are steadily losing ground. Gingerbread has 30.7% (down from 33.1% last month), while ICS has 21.7% (down from 22.5% last month).