IOS 11

iOS 11 is the eleventh major release of iOS, developed and distributed by Apple Inc. It was formally announced at the 2017 Worldwide Developers Conference alongside tvOS 11, watchOS 4 and macOS High Sierra, where the new features were showcased. iOS 11 was released on September 19, 2017, alongside the iPhone 8, the 8 Plus and the iPhone X. It succeeded iOS 10 and was followed by iOS 12.

New features
iOS 11 was advertised to "improve the iOS you know and love." New features included augmented reality and AirPlay 2. Other functions in iOS were updated or completely redesigned, such as the Control Center and the App Store.

iOS 11 also completed the transition of running solely in 64-bit to improve overall performance, dropping support for older 32-bit apps that had never been updated. Though some users complained, this was necessary to eliminate the memory and performance overhead of continuing to support legacy 32-bit architecture.

Supported Devices
iOS 11 drops support for all 32-bit devices that supported iOS 10; therefore, it drops support for the iPhone 5, iPhone 5c, and the iPad (4th generation). This is the first version of iOS to run exclusively on devices with 64-bit processors. iOS 11 is compatible with the following devices: {| style="width:100%;font-size:96%;line-height:120%;"
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iPad

 * iPad Air (all models to date)
 * iPad (5th generation)
 * iPad (6th generation)
 * iPad mini 2
 * iPad mini 3
 * iPad mini 4
 * iPad Pro (all models to date)
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iPhone

 * iPhone 5 S
 * iPhone 6 / 6 Plus
 * iPhone 6 S / 6 S Plus
 * iPhone 7 / 7 Plus
 * iPhone 8 / 8 Plus
 * iPhone X

iPod touch

 * IPod touch (6th generation)
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