Since last month, Ice Cream Sandwich (Android 4.0x) was the big winner, gaining 2.7% to come in at 23.7% of the pie, while Jelly Bean (Android 4.1) added just over half a point to come in at 1.8%. Gingerbread (Android 2.3) still makes up the majority of the ecosystem at 55.5%, but that is down just 1.7% from last month. Froyo also dropped just 1.1% to come in at 12.9%.
4.2 are correct.October is lining up to be a bit more of the same with just some slow movement. But, we should see some interesting shifts come November and December, especially if the rumors of Android
source: Android Developers