Apple has told developers that all apps submitted to the App Store, whether they are new releases or updates, must be optimised for iOS 7 by February 1 2014. Apple announced this via its news and announcements page:
Starting February 1, new apps and app updates submitted to the App Store must be built with the latest version of Xcode 5 and must be optimized for iOS 7. Learn more about preparing your apps by reviewing the iOS Human Interface Guidelines.
The latest operating system was announced in June and beginning rolling out to users in September. Adoption of iOS 7 among users is currently at 76% which, alongside the platform’s new features, gives developers a clear reason to optimise their apps.
Image by Shemp65.