Release appearance
macOS 27.0 Public Beta 4 v2
Source-linked record
Public beta
Recorded context
About this appearance
Source-linked record
At least one source is linked to this record. A researched release-notes article has not been added.
- Date
- Aug 18, 2026
- Availability
- available
- Revision
- Yes
- Build
26A5416B
Chronology evidence
Appearance sources
These sources support the recorded date, channel, or availability. A researched release-notes article has not been added.
- Apple releases public beta 4 for iOS 27, macOS 27, iPadOS 27, tvOS 27
9to5Mac · 2026-08-18T00:00:00Z · Update reporting macOS 27 Public Beta 4 re-released as build 26A5416b after build 26A5416a