The designation refers to a specific pre-release build of Apple’s mobile operating system. The “RC” suffix indicates “Release Candidate,” signifying a version considered feature-complete and potentially identical to the final, publicly released iteration. It undergoes final testing to identify and resolve any remaining critical issues before general distribution.
This phase is crucial in the software development lifecycle. It allows developers and a select group of users to evaluate the system’s stability, performance, and compatibility across various devices and use cases. Historically, issues identified during the release candidate phase have led to minor adjustments before the final version is rolled out to the wider user base, ensuring a smoother overall experience.