Bump, the folks behind that iPhone app that allows you to quickly and easily exchange contacts, released a set of stats about its users that says almost 90% of iOS device owners are already running some version of iOS 4.0 or above. Bump reportedly has over 25 million downloads, so we are talking about a decent sample of the iOS user population (though I'd argue that it's not quite as widespread as the stats might be on an app like Angry Birds -- still, we'll take what we can get). According to their figures, over 89% of users are running iOS 4.0, a number that's a little higher than what I've heard from developers in the past.
Bump says that 10% of its users are still running some form of iOS 3.0, a
