In addition to unveiling the new iPhones and the fourth generation of Apple TV, Apple also announced that the final version of iOS 9
The latest versions of iOS 9 beta firmware were released withnew features and improvements, including speed improvements, split-view multitasking, an updated Notes app, Apple Maps driving directions, an improved Siri, and more. You can learn more about the new features in iOS 9.
Compatibility
iOS 9 is compatible with the following devices:
- iPhone 6 Plus, iPhone 6, iPhone 5s, iPhone 5, iPhone 5c, iPhone 4s
- iPod touch 5th geniPad Air 2, iPad Air, iPad 4, iPad 3, iPad 2
- iPad mini 3, iPad mini 2, iPad mini
iOS 9 will not bring any significant performance degradation. With each new release, Apple tries to optimize the OS for older iOS devices.