Apple unveiled macOS Golden Gate 27 at WWDC, directly addressing widespread criticism of macOS Tahoe 26's Liquid Glass implementation. The update brings refined UI elements that integrate more smoothly with the new design language, plus user controls for adjusting visual effect intensity across the interface.

Siri AI debuts as the Gemini-powered assistant living within Spotlight search. When users type questions, the system automatically routes them to Siri AI for conversational responses in dedicated windows. The feature supports file attachments and customizable voice settings, though regulatory hurdles delay EU and China availability.

Visual Intelligence gains a dedicated keyboard shortcut for screen selection and contextual queries. Safari uses Apple Intelligence for automatic tab grouping and introduces "Notify Me" alerts for page updates. Users can describe desired browser extensions in natural language, and the system creates them automatically.

Photos adds generative image capabilities with aspect ratio adjustments and tilt corrections that seamlessly fill missing content. Spatial Reframing leverages device spatial models with pinch-to-zoom support. Shortcuts gains natural language reasoning, while Image Playgrounds introduces flexible styles and editing tools for wallpapers and contact posters.