IMO, far more interesting than the 5 million figure (because of supply constraint, potential that that number excludes in-transit devices, etc) is the 100 milli

IMO, far more interesting than the 5 million figure (because of supply constraint, potential that that number excludes in-transit devices, etc) is the 100 million iOS 6 upgrades that have been done. That's a huge portion of the devices that are capable of running it; and it's in the midst of Mapsgate, the biggest reason people are mentioning for not upgrading in major-iOS-upgrade history.