Apple has opened the starting gate for iPhone Duo app development, but that means developers have a single month to finish the race.
Xcode 27.1 beta adds iPhone Duo development tools
On Friday, Apple released the first Xcode 27.1 beta, giving developers the tools they need to prepare for iPhone Duo. They now have roughly one month to test their apps across the foldable iPhone’s many possible layouts.
Xcode 27.1 includes Swift 6.4 and SDKs for iOS 27.1, iPadOS 27.1, and Apple’s other operating systems. It also adds tools specifically intended to help developers see how their apps behave on iPhone Duo.