The Chart above shows the amount of Android devices hitting the Android Market by OS version. Android 2.1 and 2.2 are now above a combined 80% of the total mix in deployed Android OS’s. The first chart is represented by data collected over the last 14 days, whereas the chart below shows the mix on 14 day increments along the x axis dating back from June 1ts 2010 until today.
This is interesting because it shows the growth in Android OS deployment as Android versions 2.x became more widely released to devices, as well as newly launched devices. As you can see, September saw a spike.