In WWDC 2015, they say that we shall use 1x,2x,3x images in assets because iphone 6p will only download 3x image and ignore other. I have watched about App Thinning.
I would like to know whether it is only for ios 9 or below also?
Note: For iOS apps, sliced apps are supported on the latest iTunes and on devices running iOS 9.0 and later; otherwise, the App Store delivers universal apps to customers.