Xcode 27 runner image now runs on macOS 27

You can now validate your Apple apps against macOS 27 using the Xcode 27 runner image for GitHub-hosted macOS runners, available in public preview. The image previously ran on macOS 26.

How you target the image stays the same. Keep using the following labels in your workflow’s runs-on: value:

• xcode-27
• xcode-27-xlarge

This image runs on arm64 macOS runners only. To view the full list of installed software or report an issue, visit the runner-images repository.

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