The final pre-release version of Apple’s iOS 18, prior to its public release, is designated the “golden master” (GM) build. This version is functionally equivalent to what will be distributed to the general public. It undergoes extensive internal testing and is also provided to developers for final compatibility checks with their applications. Successfully passing these checks signifies readiness for broad deployment.
The significance of this build lies in its role as the gatekeeper before widespread distribution. A stable and well-tested GM release ensures a smoother user experience upon public launch, minimizing potential issues and user frustration. Historically, the release of a GM build signals the imminent arrival of the complete operating system upgrade for compatible devices. Its stability is crucial for maintaining the ecosystem’s integrity.