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Apple has just published a notice to developers on its dev center that all new apps submitted after February 1st, 2014 must be built with the latest version of Xcode 5 and “must be optimized for iOS 7.” Essentially any apps built using old versions of Xcode or possibly even just maintaining an iOS 6-style interface in Apple’s brave new world of software will be rejected from the store.

This goes for updates, too, meaning even the ambiguous “bug fixes and improvements” that seem to be ever-present in the App Store will now require an iOS 7 update just to be published in February.