A pre-release version of Apple’s operating system for its mobile devices allows developers and select users to test new features and identify bugs before the official public release. For instance, developers might install a test version on a dedicated device to ensure their applications function correctly with the upcoming OS changes.
This testing phase is critical for ensuring a stable and secure user experience upon widespread distribution. It offers advantages by allowing Apple to gather feedback on performance, usability, and potential security vulnerabilities. Prior to general availability, these programs have played a key role in the refinement of each iteration of the mobile platform.