Joe Rossignol:

Much like Mac OS X Snow Leopard in 2009, Apple said it focused on improving macOS’s performance and dozens of underlying technologies this year.

Apple says macOS Golden Gate offers quicker AirDrop transfers, faster network file browsing, improved syncing in the Messages app, better Spotlight search suggestions, and other changes that make your Mac feel “more responsive than ever.”

I had lots of problems installing beta 1 via Software Update, so I recommend downloading the full installer or IPSW. I eventually got it to work by updating to macOS 26.5.1 first (instead of installing on top of 26.4) and by booting into recovery multiple times to use Startup Security Utility to toggle the LocalPolicy from Full Security to Reduced Security and back.

macOS Golden Gate 27 Beta Release Notes:

The Recents list in the open and save panels can be accessed with the keyboard shortcut cmd-shift-f.

[…]

Unified Logging System archives generated on 27.0 releases cannot be read on macOS 26.1 or earlier due to an updated archive format.

[…]

Encrypted HFS+ (CoreStorage) is deprecated and will not be supported in a future version of macOS.

[…]

Starting in 27.0 operating systems, select system processes now enforce stricter network security (TLS) requirements. These new requirements might cause connections to fail if the server does not meet them.

[…]

Devices configured with Reduced Security mode might fail to install macOS 27 beta 1.

[…]

Accessing files in other developer teams’ app data containers and app group containers no longer prompts the user for authorization; such accesses are denied by default and can be managed by the user in Privacy & Security settings.

[…]

Apps can no longer access the local TCC database directly.

Marcus Mendes:

Visual Intelligence on macOS Golden Gate 27 is getting a dedicated keyboard shortcut. Similar to the screen capture shortcut, it lets users select portions of the screen and get contextual answers around that. From there, users can also continue the interaction from the Siri app.

Mr. Macintosh:

When using a wired network adapter with a live connection, macOS now displays a network menu bar item!

Jeff Johnson:

I love this “More in Accessibility Settings…”

Hartley Charlton:

Apple adds native ultrawide display support in macOS 27 Golden Gate, bringing higher resolutions and persistent display arrangements to users of widescreen monitors.

Hartley Charlton:

macOS 27 Golden Gate brings a major improvement to iPhone Mirroring, allowing users to resize the window beyond the iPhone’s fixed aspect ratio for the first time.

Marcus Mendes:

Currently, there seem to be several fixed aspect ratios available for resizing the iPhone Mirroring window, meaning the system adjusts the window to the nearest supported shape rather than allowing users to choose any arbitrary aspect ratio.

Louie Mantia:

iPhone Mirroring app has many, many more zoom level options now, which I very much appreciate. Thank you, whoever did that.

See also:

• Mac Power Users Talk
• macOS 27: All The Little Things
• macOS Golden Gate 27.0 Beta 1
• MacStories

Previously:

• Golden Gate Window Corners
• Golden Gate Sidebars and Toolbars
• Golden Gate Menu Icons
• Liquid Glass 27 Icons
• Liquid Glass 27 Slider
• Glow Leopard
• WWDC 2026 Keynote
• macOS Tahoe 26 Announced

Update (2026-06-11): I’ve retitled this post because it looks like Apple has mostly switched back to the old pattern of putting the OS name after the version number: “macOS Tahoe 26” but “macOS 27 Golden Gate.”

Juli Clover:

Apple is making several changes to Liquid Glass and the overall macOS Golden Gate design, and while subtle, some of the changes could make Liquid Glass on Mac easier to digest.

Jeff Nadeau:

Another on my list of small niceties in macOS 27 beta: we have decoupled Show Borders from Increase Contrast for apps using the new design. This is great for people who just want a little more edge definition on UI elements, but don't want to jump all the way to the weighty color changes of Increase Contrast.

Matthias Gansrigler-Hrad:

If you’re getting an error trying to install the macOS 27 beta ipsw […] in UTM… I have a solution for you.

Mike Wuerthele and Malcolm Owen:

What appears to be a bug in macOS 27 is preventing a number of users from selecting alternate partitions or drives to boot from. This is having a big impact on Asahi Linux users.

Stefan Esser:

csrutil disable on MacOS 27 beta gives me a manifest signing error. Is disabling SIP broken in beta 1. Or is this a problem with my Mac?

Sam Guichelaar:

Can we no longer disable SIP in MacOS 27, or what is going on here?

Teodor Sorescu:

If you are experiencing this, it is probably related to this known issue:

“Devices configured with Reduced Security … might also be prevented from allowing kernel extensions or disabling System Integrity Protection.”

See workaround there.

See also: Hacker News.

Update (2026-06-12): Dan Moren:

From what I can see, Golden Gate still doesn’t offer the ability to access Clipboard History via a single keyboard shortcut (as opposed to hitting command-space and then command-4). And it has no menu bar item, so you can’t even add a custom

Steve Troughton-Smith:

New Finder feature in macOS 27: you can paste things from your clipboard into the filesystem. Who else has been asking for this one? 😄

Juli Clover has a roundup of what’s new.

Apple Event Apple Software Announcement HFS+ iPhone Mirroring Mac macOS 27 Golden Gate macOS Beta macOS Release Security Startup Disk System Integrity Protection Transparency Consent and Control (TCC) WWDC

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