Marco gives one datapoint for iOS 5.0 here for Instapaper: http://www.marco.org/2011/11/30/more-ios-device-and-os-version-stats-from-instapaper http://www.marco

Marco gives one datapoint for iOS 5.0 here for Instapaper: http://www.marco.org/2011/11/30/more-ios-device-and-os-version-stats-from-instapaper http://www.marco.org/2011/11/30/more-ios-device-and-os-versi... 49 days = 45%