As stated on Apple’s website :“iOS 9 is full of enhancements you’ll appreciate every day. Your apps become more essential. New multitasking features on iPad make you even more productive. Siri can do more than ever, and new proactive suggestions help you get things done before you ask. And improvements at the foundation of the operating system enhance performance, battery life, and security. The more you do with iOS 9, the more you’ll wonder how you ever did without it.” To know all the new amazing features of the very beautiful iOS 9, read here : apple.com/ios/ios9-preview/
Related : Top 10 Features of Apple Watch
Take a First look at iOS 9 Beta :
https://youtu.be/wBIn0_-vwOs Related : 10 Interesting Facts About Apple Inc. iOS9 is much much lighter than iOS8, iOS9 only takes 1.3GB memory as compare to iOS8 which takes 4.5GB, So that would be a big change and will definitely make all the iPhone users happy especially those who are using 16GB iPhone variants.