macOS 27 Golden Gate beta 6 introduces a refreshed look for the iconic traffic light window controls, echoing the detailed design of early OS X systems. The red, yellow, and green circles now feature more texture, providing a subtle nod to classic Aqua aesthetics.

Beyond the visual tweak, the update ensures consistency across window shapes, correcting the quirky variations seen in macOS 26 Tahoe where window borders behaved oddly. The new controls affect every app window, making the change both cosmetic and functional.

The beta also updates the Preview app icon to match the redesigned style debuted in iOS 27 beta 5 last week, and includes small icon refinements across the system. Developers and public users can install the beta now; a full release is expected in September.

Overall, the redesign offers a familiar yet modern feel, blending nostalgia with contemporary macOS design principles.