Apple macOS 27 Golden Gate release and updates

Apple’s macOS 27 Golden Gate update introduces several functional changes and technical improvements. The operating system now allows users to view their device’s manufacture date via the ‘Regulatory Certification’ section under ‘About This Mac,’ a feature that restores information previously inaccessible since 2021.

Technically, the update improves High Dynamic Range (HDR) support for external monitors. Unlike previous versions where HDR was disabled when using scaled resolutions on non-Apple displays, macOS 27 supports HDR natively alongside non-integer scaled resolutions. The update also includes an enhanced brightness slider for HDR mode, enabling software-based adjustments via Apple keyboard keys.

Despite these additions, some users have reported performance issues following the installation. Reported symptoms include lag, stuttering, and visual bugs in Mission Control and Stage Manager, such as flickering thumbnails and animation delays. Potential workarounds include disabling transparency in Accessibility settings or turning off the auto-hide feature for the Dock.