Just out <https://github.blog/changelog/2025-09-11-actions-macos-26-image-now-in-public-preview/>, the latest macOS runners are `macos-26` and `macos-26-xlarge`.
Just out https://github.blog/changelog/2025-09-11-actions-macos-26-image-now-in-public-preview/, the latest macOS runners are
macos-26andmacos-26-xlarge.