Xcode 15 Deprecation in Semaphore

Semaphore will be removing the Xcode 15 image from its machine pool as of October 22, 2025, affecting Apple developers who build projects using Xcode 15. This change is in response to Apple's requirement that all iOS and iPadOS apps submitted to the App Store from April 2025 onward must be built with at least Xcode 16 and the iOS 18 SDK. Developers can determine if they are impacted by checking their project's settings in the Workflow Editor or searching their repository's .semaphore folder for the macos-xcode15 string. To prepare for the transition, affected organizations are encouraged to switch to the Xcode 16 image before the deprecation date by either updating the Workflow Editor settings or modifying their pipeline YAML files. Semaphore advises testing workflows with the Xcode 16 image thoroughly before proceeding with new releases and offers support for any questions through their email or Discord.