Apple is giving developers new iPhone Duo resources, design kits, workshops, and an upcoming Xcode 27.1 simulator built for the device's new poses and orientations.
A new screen shape creates new layout decisions
Foldable hardware makes responsive layout behavior more important because an app can move through different usable screen shapes and orientations.
Apple is publishing dedicated developer resources
Apple Developer now points teams to iPhone Duo design resources, workshops, videos, and preparation guidance.
Testing should happen before launch
Xcode 27.1 beta adds development support for iPhone Duo, including updated SDKs and a simulator for its new poses and orientations.
Frequently asked questions
When does iPhone Duo launch?
Apple Developer says iPhone Duo becomes available on October 23, 2026.
Which iOS version will iPhone Duo ship with?
Apple says iPhone Duo will run iOS 27.1 when it becomes available.
Will Xcode include an iPhone Duo simulator?
Yes. Apple says Xcode 27.1 adds a simulator supporting the device's new poses and orientations.