Xcode 27.1 Release Notes
Update your apps to use new features, and test your apps against API changes.
Overview
Xcode 27.1 includes Swift 6.4 and SDKs for iOS 27.1, iPadOS 27, tvOS 27, watchOS 27, macOS 27, and visionOS 27. Xcode 27.1 supports on-device debugging in iOS 17 and later, tvOS 17 and later, watchOS 10 and later, and visionOS. Xcode 27.1 requires a Mac running macOS Tahoe 26.6 or later.
See Xcode Support to learn more about compatible platforms and deployment targets.
Mac Catalyst
Known Issues
Projects that use APIs specific to iOS 27.1 show compile errors when building for Mac Catalyst (“undeclared identifier”, “not found”, “has no member”, “cannot find”, etc.). (185924957)
Workaround: Use build-time conditionals like
#if !targetEnvironment(macCatalyst)(Swift) or#if !TARGET_OS_MACCATALYST(Objective-C) to isolate affected code.Projects that target iOS 27.1 show no Mac Catalyst run destination available. (187046347)
Workaround: Add a Mac Catalyst 27.0 minimum deployment in target settings.
Previews
New Features
The canvas overrides picker now includes a Display group for previewing content on a device’s alternative display. (182598534)
Simulator
Known Issues
Initial Simulator launch can take several minutes. (187708500)
StandBy is unavailable in the iPhone Duo Simulator runtime. (187708663)
Running and debugging most app extensions is unavailable in the iPhone Duo Simulator runtime. (187708767)
In the iPhone Duo simulator, an app using
CameraCaptureAccessorycan use both displays at the same time without an active camera capture session. (190155353)