Release build record
macOS 27.0 26A5421A
Source-linked record
available
Build identity
Release facts
- Build number
26A5421A- Version
- macOS 27.0
- Appearances
- 2
- Scope
- General
Channel history
Recorded appearances
A build can appear in more than one channel. These entries stay separate instead of being collapsed.
- Appearance
Public Beta 5
Public beta
- Appearance
Beta 7
Developer beta
Build evidence
Build sources
These sources support the build identity, appearances, or availability. A researched release-notes article has not been added.
- New public betas now available for iOS 27, iPadOS 27, macOS 27 Golden Gate, more
9to5Mac · 2026-08-24T00:00:00Z · macOS 27 Public Beta 5 uses developer beta 7 build 26A5421a
- Releases - Apple Developer
Apple Developer · Apple · 2026-07-29 · macOS 27.0 beta 7 (26A5421a); August 24, 2026
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