Apple releases Xcode 27.1 beta 1 for developers, adding support for building apps that target the iPhone Duo, its upcoming foldable device. Multiple outlets report the update includes a Duo-focused SDK and simulator support designed to help developers test how apps behave on the device’s new screen sizes, layouts, and orientations.
The coverage also describes the broader development environment changes in Xcode 27.1. AppleInsider and MacRumors say the release includes updated SDKs for iOS 27.1 and iPadOS 27.1 (along with other operating system components mentioned by AppleInsider), and a simulator that supports the iPhone Duo’s poses and orientations. AppleInsider frames the timeline as a short window—around one month—for developers to validate their apps across the Duo’s possible configurations, while MacRumors notes platform requirements such as availability on Apple silicon Macs with a specified macOS version.
Daring Fireball adds that Apple provides additional developer resources beyond the Duo SDK, including references to Figma and Skitch design kits made available alongside the developer materials.
