Apple unveils macOS Golden Gate 27 with a global opacity slider and smarter search

Apple announced macOS Golden Gate 27 at WWDC, adding a global slider to adjust Liquid Glass UI opacity and tighter window radii for a more unified look, plus a rebuilt on-device Search infrastructure that indexes content quickly and boosts Spotlight for Photos and Mail. It also packs cross‑platform features like updated parental controls, Screen Time, and a bold new Apple Intelligence architecture centered on Siri AI, following last year’s Tahoe update; Intel Macs will still receive three years of security updates.