First macOS Tahoe 26.6 Beta Now Available for Developers - MacRumors
Skip to Content

First macOS Tahoe 26.6 Beta Now Available for Developers

Apple today provided the first beta of an upcoming macOS Tahoe 26.6 update to developers for testing purposes, with the update coming two weeks after Apple launched ‌macOS Tahoe‌ 26.5.

macOS Tahoe 26 Thumb 2
Developers can download the ‌macOS Tahoe‌ 26.6 update by opening up the System Settings app, selecting the General category, and then choosing Software Update. Beta Updates will need to be enabled, and a free developer account is required.

With macOS 27 set to be unveiled in less than a month, Apple is likely focusing most of its attention on the new software. We are not expecting any major new features in ‌macOS Tahoe‌ 26.6.

The beta is limited to developers right now, but a public beta is expected in the next week or two.

Related Roundup: macOS Tahoe
Related Forum: macOS Tahoe

Popular Stories

macOS Tahoe 26 Thumb 2

macOS Tahoe 26.5 Release Candidate Now Available

Monday May 4, 2026 10:14 am PDT by
Apple today provided the release candidate version of an upcoming macOS Tahoe 26.5 update to developers for testing purposes, with the update coming a week after Apple seeded the fourth beta. Developers can download the macOS Tahoe 26.5 update by opening up the System Settings app, selecting the General category, and then choosing Software Update. Beta Updates will need to be enabled, and a...
macOS Tahoe 26 Thumb 2

macOS Tahoe 26.5 Now Available

Monday May 11, 2026 10:04 am PDT by
Apple today released macOS Tahoe 26.5, the fifth major update to the macOS Tahoe operating system. macOS Tahoe 26.5 comes seven weeks after Apple released macOS Tahoe 26.4. Mac users can download the new software by opening up the System Settings app and navigating to the Software Update section. macOS Tahoe 26.5 adds a Suggested Places section to the search interface in the Apple Maps...
macOS Tahoe and iPhone

Apple Alerted to macOS Security Vulnerability Uncovered With AI Tool

Thursday May 14, 2026 9:04 am PDT by
Anthropic recently announced Project Glasswing, an initiative that enables tech companies like Apple to use its new frontier AI model Claude Mythos Preview to find security vulnerabilities across operating systems and web browsers. The Wall Street Journal today reported that researchers at cybersecurity firm Calif used Claude Mythos Preview to uncover a new macOS security vulnerability last...

Top Rated Comments

2 days ago at 01:01 pm

I will hold on to my comfort blanket (Sequoia) for as long as I can.
I had to work on a machine running Sequoia the other day, and it reminded me how much of a downgrade the Tahoe UI is. Especially the comically large window corners.
Score: 13 Votes (Like | Disagree)
2 days ago at 11:47 am
I will hold on to my comfort blanket (Sequoia) for as long as I can.
Score: 10 Votes (Like | Disagree)
winxmac Avatar
2 days ago at 10:19 am
Releases:
iOS 26.6 beta 1 (23G5028e)
iPadOS 26.6 beta 1 (23G5028e)
macOS 26.6 beta 1 (25G5028f)
tvOS 26.6 beta 1 (23L5729e)
visionOS 26.6 beta 1 (23O5728e)
watchOS 26.6 beta 1 (23U5025e)

Source ('https://developer.apple.com/news/releases/')
Score: 10 Votes (Like | Disagree)
2 days ago at 11:59 am

Releases:
iOS 26.6 beta 1 (23G5028e)
iPadOS 26.6 beta 1 (23G5028e)
macOS 26.6 beta 1 (25G5028f)
tvOS 26.6 beta 1 (23L5729e)
visionOS 26.6 beta 1 (23O5728e)
watchOS 26.6 beta 1 (23U5025e)

Source ('https://developer.apple.com/news/releases/')
we may add to the list

audioOS 26.6 beta 1 (23L5729e)
macOS 15.7.8 RC 1 (24G806)
macOS 14.8.8 RC 1 (23J604)
Score: 6 Votes (Like | Disagree)
2 days ago at 02:49 pm

Ditto. I'm thinking 27.2
How do you know you won’t hate that more?
Score: 4 Votes (Like | Disagree)
1 day ago at 12:00 pm
With 26.6, Brave is having issues with "energy usage" in Activity Monitor. Makes the whole laptop warm and fans sometimes spin (M4Pro, 48GB). It's not many tabs, and I NEVER had the issue before. My wife does since she has 100+ tabs open in 26.5. That's annoying, so hoping for a fix via Apple and/or Brave (but likely Apple since issues was not there before for me).
Score: 2 Votes (Like | Disagree)