Apple Unveils 5 macOS 27 Beta Features as Free Developer Access Opens
Updated
Updated · Lifehacker · Jun 10
Apple Unveils 5 macOS 27 Beta Features as Free Developer Access Opens
3 articles · Updated · Lifehacker · Jun 10
Summary
Five additions stand out in the first macOS 27 “Golden Gate” beta: Safari tab auto-grouping, broader ultrawide monitor support, upgraded iPhone mirroring, a system-wide Liquid Glass slider, and the new Siri AI integration.
Free developer enrollment now grants early access to the beta, though Apple still warns most users to wait because early builds can carry bugs that affect apps and data.
Safari’s organizer already groups tabs from the same site reasonably well, while ultrawide support adds more native resolutions, refresh rates and remembered window layouts after reconnecting displays.
iPhone mirroring now supports dual-pane views in compatible apps and access to iOS Control Center, while the Liquid Glass control lets users reduce interface translucency system-wide.
Siri AI remains waitlisted for some testers, but Apple is positioning it as a built-in ChatGPT and Gemini rival ahead of a public beta in July and a full release this fall.