Apple Releases Xcode 27.1, First SDK With Support for iPhone Duo

Apple has released Xcode 27.1, the first software development kit (SDK) to support the iPhone Duo. This new version allows third-party developers to adapt their apps to the iPhone Duo's screen sizes and layouts. The Xcode 27.1 beta is available for download from Apple's developer webpage and includes updated SDKs for the iPhone Duo, as well as a simulator that supports the device's new poses and orientations, according to MacRumors.

The release of Xcode 27.1 meets Apple's promise to release developer tools before the end of September, as noted by 9to5Mac. This will give developers a chance to prepare for initial iPhone Duo support, which is expected to launch in October. According to 9to5Mac, the iPhone Duo will be available for pre-order on October 1.

Daring Fireball reports that Apple's developer site also offers Figma and Skitch design kits in addition to the iPhone Duo-specific SDK. Apps built against Apple's iOS 26 SDK will need to be updated for iOS 27 for basic iPhone Duo support, while apps made for iOS 27.1 and later will take full advantage of the larger display, 9to5Mac adds.

Brief written by urgent.news from Daring Fireball, MacRumors, 9to5Mac — 3 reports on this story. Machine-written — may contain errors; check the original before relying on it.