Announcement: Xcode15 Deprecation in Semaphore

Semaphore is deprecating MacOS Xcode15 build environments to maintain platform security, reliability, and maintainability, with the end of life scheduled for July 6, 2026. Users are advised to switch to Xcode26, as Xcode16 is also slated for deprecation in September 2026. The deprecation process involves a series of brownout periods in June 2026, during which jobs using Xcode15 will temporarily fail to start, allowing users to detect remaining dependencies. By July 6, 2026, Xcode15 will be fully removed from Semaphore, and jobs configured to run on this environment will no longer start. Users are encouraged to update their pipelines to a supported Xcode version, ideally Xcode26, and validate their pipelines to ensure compatibility. If assistance is needed during migration, users can contact Semaphore support or refer to the documentation.

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