Apple fixes 'app slicing' iCloud bug for latest iOS 9 update
 

The iOS platform's "App Thinning" feature is now available, and you'll be able to download leaner, smaller apps if you've already installed iOS 9.0.2. App Thinning or "app slicing" allows you to download only the parts of an app needed for your dev...

http://www.engadget.com/2015/10/06/a...s-app-slicing/