Apple is now accepting App Store submissions for iPhone Duo apps and games, as the foldable iPhone’s launch approaches. Multiple outlets report that the change is intended to let developers prepare apps specifically for the device’s foldable layout in time for the release date.
Sources say Apple states that existing App Store apps work on the iPhone Duo, but only apps built with the iOS 27.1 SDK or later can adjust to fill the inner display. Apps that are not optimized are expected to display black borders instead of fully using the screen area. Developers are instructed to use Xcode 27.1 to prepare iPhone Duo-ready versions, and Apple provides guidance through its developer resources.
Outlets also emphasize timing. AppleInsider notes the practical need for developers to complete updates and pass App Store review to be available at launch. Overall, the reports align that submissions are open now, while optimization requirements and how apps adapt on the Duo’s inner display are the key technical differences highlighted by Apple.
