The term refers to a pre-release version of Apple’s mobile operating system, specifically a fifth iteration within the 18.5 development cycle. These versions are distributed to developers and select users for testing purposes, allowing for the identification and correction of bugs and the evaluation of new features prior to a public release.
The significance of such pre-release builds lies in their contribution to software stability and user experience. By exposing the software to a wider range of hardware configurations and usage patterns than internal testing can provide, developers gain valuable insights that inform the final product. Historically, beta programs have played a crucial role in refining software before its widespread distribution, minimizing potential issues and ensuring a smoother transition for end users.