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Re:Apple will require all new apps to be optimized for iOS 7... by muzzamike on Wednesday December 18, 2013 @03:59AM (#6926537)
This just means apps will have to be built with Xcode 5. Older iOS versions can still be supported.
Re:Apple will require all new apps to be optimized for iOS 7... by interpol_p on Wednesday December 18, 2013 @04:22AM (#6926607)
More specifically, it means apps will have to be built with the iOS 7 base SDK (you can modify Xcode 5 to build with the older SDKs as base).

This ensures things like the new style keyboard and status bar UI are used in your app when running on iOS 7.