Xcode 27.1 Beta Adds Swift 6.4 and iPhone Duo Development Support
On Friday, September 18, Apple released Xcode 27.1 beta with Swift 6.4, updated platform SDKs and development support for the iPhone Duo. Mobile engineers can now build and test adaptive interfaces for the new form factor, though the beta includes simulator and app-extension limitations.
The story details you provided do not match reality. Current Xcode is version 16.x (released 2024), Swift 6 is the latest major release, and no iPhone Duo or Xcode 27.1 exists.
