macOS Sierra 10.12.6 Beta 5 is a pre-release version of the macOS operating system, designed for developers and testers to evaluate and provide feedback on the upcoming update. Xcode Beta, on the other hand, is a set of development tools used to create, test, and debug applications for macOS, iOS, watchOS, and tvOS.
: 10.12.6 remains the final stable version of macOS Sierra before the transition to macOS High Sierra. 2. Xcode 9 Beta Macos Sierra 10 12 6 Beta 5 Dmg Xcode Beta Dmg
Introduced a completely redesigned source editor with faster scrolling and improved code structure highlighting. macOS Sierra 10