Apple unveils macOS 27 Golden Gate with new Siri AI and performance upgrades

Apple unveiled macOS 27 Golden Gate as the successor to macOS 26 Tahoe at WWDC 2026 on June 8 in the US ^{[1, 2, 3, 4, 5, 6]}. The new operating system only supports Apple Silicon Macs, dropping Intel compatibility, and runs on models including MacBook Neo (2026), MacBook Pro and Air (2020+), Mac mini (2020+), iMac (2021+), Mac Studio (2022+), and Mac Pro (2023+) ^{[2, 4]}. Some advanced AI features demand M3 Macs with a minimum of 12 GB RAM and thus exclude certain newer low-end models ^[4].

Golden Gate introduces a global slider to adjust the opacity of Liquid Glass UI effects, alongside tighter window corner radius to enhance interface appearance ^{[1, 2, 5]}. App toolbars have been unified and sidebar icons now stretch fully to their edges with restored colors ^{[1, 5]}. Search functions across Spotlight, Mail, and Photos have been rebuilt with fresh indexing for more reliable and faster results ^{[1, 2, 5]}. Safari gains a new feature automatically grouping tabs by topics, with Apple explaining, "Safari analyzes each page, identifies similarities, and then brings related tabs together" ^[6].

Performance improvements are significant. Apple reported smoother animations, faster app launches, and notable speed gains in Photos (70% faster display), AirDrop (80% faster), and cloud drive transfers (up to 5 times faster) ^{[3, 5]}. "We focused on improving macOS's performance and dozens of underlying technologies this year," Apple said ^[5].

Siri AI relaunches as a dedicated app powered by Google's Gemini foundation models with enhanced natural language processing, personal context awareness, automatic proofreading, and customizable voices ^{[1, 4, 5]}. However, these Siri AI features will not be available initially in the EU or China due to regulatory issues ^{[4, 5]}.

Developers received the macOS 27 Golden Gate beta on June 8 ^{[4, 5, 6]}. Public beta testing is expected to start in July, followed by a full public release scheduled for fall 2026 ^{[4, 5, 6]}. Apple also removed the $99 fee for developer accounts to access early betas, allowing free registration ^[6].