How do you update the app icons and launch images to support IOS 6 and 7 simultaneously?

Question

I have been stymied figuring out how to release an application from Xcode5 that supports IOS7 AND IOS 6+ in the same build, with assets (icons and splash screens) that load

Answer 1

For Xcode 6

For LaunchImage you must make sure you check iOS 6.0 and Prior iPhone (Portrait ) or iPad // depend on your project configuration

Sizes

Default.png (320x480) 
Default@2x.png (640x960) 
Default-568h@2x.png (640x1136)

The same to AppIcon