Original Link: http://tapadoo.com/2013/ios7-move-now-or-be-an-insta-delete/
Dermot Daly, on clients who thought letterboxed apps would be OK on the iPhone 5:
I predict the iOS 7 effect will be worse. Within a week of running full time, those apps which haven’t been modernised to look like an iOS 7 app will look very old. They too will become insta-deletes.
If you have an app in the store, We’d highly recommend looking at modernising them pretty quick.