iPhone 5s iOS 9 Release: 10 Things to Expect

Early iOS 9 App Updates

You should expect to start seeing developers release app updates with iOS 9 support ahead of the iOS 9 release date. 

Developers have been testing the iOS 9 update since June and we should see them release app updates that are aimed at making the iOS 8 to iOS 9 transition as seamless as possible. We typically see developers release iOS compatibility updates in the days following the iPhone launch. 

These will be important if you're looking to upgrade on day one. We typically install these updates ahead of the iOS release date and come out of it without any major problems. Just make sure you read the reviews before making your move.