New information from the Apple Developer Support pages shows that iOS 8 is now installed on 52 percent of all iOS devices



From TUAW:

Of the other 48 percent of iOS devices, 43 percent are running versions of iOS 7, while only 5 percent are running older editions of iOS. The latest edition of iOS, version 8.1, may be the impetus for even more users to bump their devices to iOS 8 since it includes some much-needed bug fixes that were not available in earlier releases.

  Apple: iOS 8 now installed on 52% of all devices