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According to Apple's latest statistics, iOS 9 is now installed on 57 percent of all compatible devices accessing the App Store, a 7 percent uptick over the past two weeks.
The latest numbers from Apple's developer webpage suggest interest in the new operating system remains strong three weeks after launch. Aside from iOS 9, 33 percent of devices visiting the iOS App Store on Oct. 5 were still running iOS 8, while 10 percent had iOS 7 or earlier installed.
While not a massive design overhaul ala iOS 7, iOS 9 brings a number of enhancements for new and existing hardware. For example, iPad owners can take advantage of new multitasking features like Slide Over and picture-in-picture video, while iPhone 6s users get support for 3D Touch. The update also comes with Siri and search upgrades, a News app and behind-the-scenes improvements resulting in better battery life and smaller app downloads.