Apple released the first public beta of macOS 27 Golden Gate on July 13, 2026, opening this fall's release to anyone willing to test it. A second public beta followed on July 22, mirroring developer beta 4 (build 26A5388g) from July 20. The finished release is still expected in September.
What's Actually New
Golden Gate is a refinement year rather than a redesign year, but the betas have accumulated some real changes:
- The new Siri. The conversational assistant Apple demoed at WWDC now has a companion app and improved on-device indexing, so it pulls more relevant answers from your own content instead of punting to the web.
- Third-generation Apple Foundation Models underpin both on-device and Private Cloud Compute features.
- A Liquid Glass opacity slider. One of the most requested fixes from the Tahoe cycle: you can now dial precisely how transparent or opaque interface elements look, rather than choosing between two presets.
- Standardized rounded corners across system windows and apps, cleaning up an inconsistency Tahoe introduced.
- New Golden Gate wallpapers and screensavers.
Testers have also spotted groundwork that hints at Apple's hardware plans — direct touch input in Sidecar, pull-to-refresh in Safari, Mail, News, Podcasts, and Calendar, and a pill-shaped Siri interface in Spotlight. See our MacBook Ultra roundup for why that matters.
Which Macs Can Run It
Apple Silicon only. macOS 27 drops support for every Intel Mac — if your Mac has an Intel processor, macOS Tahoe 26 is the end of the line, and Apple will keep shipping security patches for it for roughly two more years. Every M-series Mac that runs Tahoe should run Golden Gate, along with the A18 Pro-powered MacBook Neo.
How to Enroll
- Back up first. A Time Machine backup, or better, a full bootable clone. Downgrading from a beta means erasing the drive.
- Sign in at Apple's Beta Software Program site with your Apple Account — enrollment is free.
- On the Mac you're testing with, open System Settings → General → Software Update.
- Click the ⓘ next to Beta Updates and choose macOS 27 Public Beta.
- The update appears on the same screen. Keep the Mac plugged in while it installs.
Should You Install It?
On a spare Mac, sure. On the Mac you work on, no. Public betas are more stable than the first developer seeds, but this is still pre-release software two months from launch — expect broken third-party apps, battery regressions, and the occasional feature that stops working between builds. If you install it and regret it, here's how to downgrade macOS.
If you just want a stable Mac, stay on the Tahoe track: 26.5.2 is the current release, and macOS Tahoe 26.6 reached its release candidate (build 25G70) on July 20, so a public release is days away.