Noticed this after the recent iOS signing changes, as that provided an easy opportunity to see definitively what happened, and I was curious if anyone knew anything about this. I updated my 5th gen. iPod touch from 6.0.1 to 6.1.3 and (though I had to connect to Wi-Fi to set it up) immediately placed it in Airplane Mode after exiting the setup app. It never exited Airplane mode or even connected to power since that evening. Several days later, I woke up to a badge on Settings and a notification telling me iOS 8.4.1 was available (though not downloaded). How the hell did it know that there was an update available? Is Apple playing (or, rather, did they play) some stupid games with Airplane Mode? The only thing that I can think of is that in the 15 or so seconds it was connected to Wi-Fi, it checked for updates and then delayed the notification by a few days, which is still odd. Anyone know something I don't? My goal, obviously, was to prevent having a badge on Settings.