You can't get a new iPhone 6 or iPhone 6 Plus until Friday, but iOS 8, the latest version of Apple's mobile operating system,will roll out on Wednesday,Sep 17.
The free download will be available to anyone with an iPhone 4S, 5, 5C or 5S.
IOS 8 isn't the radical upgrade that iOS 7 was, but it has a handful of new features that you're bound to enjoy. Here's a look at a few of our favorites feature in iOS 8.
