

iOS 9 is compatible with the iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, iPhone 5s, iPhone 5c, iPhone 5, iPhone 4s, iPad Pro, iPad 2, iPad 3, iPad 4, iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, fifth-generation iPod touch and sixth-generation iPod touch.
iOS 9 was announced last June at WWDC and features a News app, Proactive Suggestions, Low Power Mode, split-screen multitasking on iPad, Apple Maps transit routing, a new systemwide San Francisco font, an optional iCloud Drive app, wireless CarPlay support, a revamped two-factor authentication system, keyboard enhancements, improved security, new developer tools and more.
Article Link: iOS 9 Launching September 16 for iPhone, iPad and iPod Touch