macOS 27 Golden Gate refines the polish: adjustable Liquid Glass, smarter windows, and 5K display tweaks

Ars Technica’s Andrew Cunningham surveys macOS 27 Golden Gate’s non‑AI improvements, spotlighting UI refinements like a tunable Liquid Glass effect and reworked window corners, streamlined menu-bar icons, better external-display support (including 5K ultrawide), enhanced virtualization and container machines, and a suite of small performance wins; plus new Appearance/theming options (including Xcode window tinting) and a note that the beta is still evolving.