MacOS 27 highlights: Siri AI, Liquid Glass tweaks and Safari smarts

At Apple's Worldwide Developers’ Conference, the company unveiled MacOS 27, codenamed "Golden Gate," a relatively slim update due later this fall. Branded as a "Snow Leopard" release focused on performance rather than big additions, it refines features from MacOS Tahoe—most notably the Liquid Glass UI.

MacOS 27 also ends support for Intel-based Macs and requires an Apple M1 processor or newer. The headline change is a major rework of Siri into a more conversational, agentic assistant with on-screen awareness. Siri can be invoked via Spotlight and accepts typed natural-language queries, opening in a new interactive window that can be expanded to handle follow-up requests.

Siri can select files, summarize content, extract key figures without opening each item, and search across devices for information in Messages or Mail. The app keeps a conversational history that syncs privately in iCloud, and the assistant is powered by Google's Gemini foundational AI models.

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