Part of our Apple WWDC Announcement Series
Specifications and expert analysis on each launch, as it happens.
Apple named this year’s macOS release Golden Gate – macOS 27 – at WWDC26 on Monday. The name nods to the strait near Apple’s Cupertino headquarters. The substance of the release nods to something more consequential: the official end of Intel Mac support.
Apple Silicon only
macOS Golden Gate requires Apple silicon. Intel Macs will not receive the update. Rosetta 2, the translation layer that allowed Intel Macs to run Apple silicon apps after the 2020 chip transition, is also being retired. This closes the chapter on a transition Apple announced at WWDC 2020 and gives developers a clean cut: if your app is not a native Apple silicon binary, it will not run on macOS 27.
🔴 Critical for Fleet Planning: If your organisation has Intel Macs still in active use – particularly those purchased between 2018 and 2020 – macOS Golden Gate marks their final OS update boundary. They will continue to function, but they will not receive macOS 27 security updates. Identify these machines now. The replacement conversation is no longer theoretical.
What is new in macOS Golden Gate
- Siri AI, system-wide. The same rebuilt assistant coming to iOS 27 arrives on Mac. On macOS, Siri AI can be invoked via Ctrl+click on images, text, and video. Apple demonstrated selecting multiple presentations and asking Siri to compare them and recommend one. Full Siri AI features require M3 or later with 12GB or more of unified memory.
- Redesigned toolbar and sidebar. Sidebars now stretch edge-to-edge and regain colour based on the active window. Toolbars are more uniform across apps. Window corners have a tighter radius. These are welcome refinements for anyone who found last year’s Liquid Glass changes disorienting.
- Refreshed app icons. Across the system, Apple is updating its own app icons as part of the visual refresh.
- Speed improvements. Apple reported performance gains of up to 80 per cent for certain tasks. Independent testing will reveal what that figure maps to in real-world use, but the direction of travel is clear.
- Safari with Apple Intelligence. AI-powered reading and browsing tools built into Safari. Details on the specific capabilities are expected to emerge from WWDC developer sessions this week.
- Mac App Store – Intel builds no longer required. With Intel support ending, developers will no longer need to submit Intel-compatible versions of their apps and games. A practical signal that the ecosystem has moved on.
Siri AI on Mac: hardware reality
This is the detail most likely to cause fleet-level friction. Siri AI on Mac requires M3 or later with at least 12GB of unified memory. That means M1 and M2 Macs, and M3 Macs configured with the base 8GB, will not have access to the full Siri AI feature set even after upgrading to macOS Golden Gate.
Memory Configuration Matters: When specifying Mac configurations going forward, 16GB of unified memory should be the baseline for any machine you expect to run Siri AI features. The 8GB option exists but limits the long-term capability of the machine. This applies equally to MacBook Air, MacBook Pro, Mac mini, and iMac.
Timeline and what to do now
The macOS Golden Gate developer beta is available now. Public beta arrives in July. The general release is expected in September, in line with Apple’s annual pattern.
Recommended Steps: Three things to do before September. First, audit your Mac fleet for Intel machines and begin the end-of-life conversation with stakeholders – these machines need a replacement plan, not a patch plan. Second, check your managed Mac population for M1/M2 devices configured with 8GB; document which users will have a limited Siri AI experience so you can set expectations appropriately. Third, test your MDM profiles and managed app configurations against the Golden Gate beta from July – particularly any policies touching Siri, Apple Intelligence, or privacy settings.
The Bigger Picture: macOS Golden Gate is the clearest signal yet that Apple’s silicon transition is complete. The performance headroom in Apple silicon Macs – particularly M4 and above – means that the machines organisations are buying today have significant runway. The investment case for moving away from Intel is no longer about new features. It is about continued security coverage.
Read More WWDC 2026 Coverage macOS Golden Gate is one part of Apple’s WWDC26 story. See the full breakdown of every announcement and its business impact.
Still running Intel Macs? We can help you audit your fleet, plan your refresh cycle, and manage the transition to Apple Silicon on your timeline — not Apple’s.
