Google has released the latest breakdown of the platform version numbers, and they show Gingerbread growing in a big way. These numbers are a snapshot of the phones and tablets that have visited the Android Market up to October 3, 2011, so it's a pretty good breakdown of just what's out there in the wild.
As noted, Gingerbread saw a big jump of almost 8 percentage points, and almost all of it came from the Froyo column. This means OEMs are getting their phones upgraded to the latest platform version, bringing welcome security and bug fixes along for the ride. On the other end of the spectrum, not much has changed for phones still using version 1.5 and 1.6, they still clock in at just 2.5 percent of the total. Honeycomb has seen a slight bump from 1.4 percent to 1.8 percent of the total, and Android 2.1 has dropped a couple tenths to 11.7 percent.
It's about what anyone would have expected, some phones are going to be stuck on older versions, and phones that can be upgraded are being upgraded, albeit slower than many would care for. The numbers are quite favorable, with 97.5 percent of all Android devices on the 2.X codebase. Of course, this won't look quite so good when we move to Ice Cream Sandwich, and go through the waiting game all over again. We'll visit that one next month, hopefully.
Source: Android Developers