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Release record

macOS 15.6

Full article
Public release
Recorded milestones
5
Beta cycle
43d
Average interval
11d
Public release
Jul 29, 2025

Release notes

Overview

Editorial synthesis with inline references and a source ledger when citations are available.

Release overview

macOS 15.6 was a focused bug-fix and security update rather than a feature release. [1]Its developer notes identify a corrected DFU restore failure affecting Finder and Apple Configurator.[2]

Enterprise reliability

Apple also documented fixes for full-installer downloads, DHCP behind transparent proxies, migration in Setup Assistant, unexpected Recovery boots, Platform SSO enrollment, and 802.1X credential timeouts.[3]

Source ledger

References

Sources are linked to the claims they support. Publication and access dates are shown when available.

  1. What's new in the updates for macOS Sequoia 15

    Apple Support · 2026-07-29 · macOS Sequoia 15.6

    Back to text ↑
  2. macOS Sequoia 15.6 Release Notes

    Apple Developer · 2026-07-29 · General — Resolved Issues

    Back to text ↑
  3. What's new for enterprise in macOS Sequoia

    Apple Support · 2026-07-29 · macOS Sequoia 15.6

    Back to text ↑

Documented & observed

Changes in this version

Source-linked features, fixes, known issues, removals, and community-observed behavior recorded across this version’s appearances and verified builds.

Release changes

Changed in this release

Features, fixes, removals, and regressions first observed in this release record.

bugFix · fixed

Setup Assistant migration completion

documentedconfirmed

A managed setup combination that could prevent migration from completing was corrected.

Recorded at Public

  1. [1] What's new for enterprise in macOS Sequoia · macOS Sequoia 15.6 — Setup Assistant

bugFix · fixed

DFU restore reliability

documentedconfirmed

The update corrected unsuccessful DFU restores initiated through Finder or Apple Configurator.

Recorded at Public

  1. [1] macOS Sequoia 15.6 Release Notes · General — Resolved Issues

enhancement · changed

Platform SSO and 802.1X reliability

documentedconfirmed

Two managed-authentication workflows were made more reliable through an enrollment fix and a longer credential timeout.

Recorded at Public

  1. [1] What's new for enterprise in macOS Sequoia · macOS Sequoia 15.6 — Platform SSO and 802.1X

Milestones

Release history

Every recorded channel appearance in chronological order. Open an appearance for any available build, scope, notes, and sources.

  2. +14 days
  3. +14 days
  4. +7 days
  5. +8 days

    Public release

    Public

    Source-linked recordEditorially verified

    The public macOS 15.6 release was a maintenance update with documented fixes for DFU restore, installer retrieval, managed networking, Setup Assistant, Recovery boots, and Platform SSO.

    Availability
    available
    Sources
    8 linked
    Open this appearance

Historical context

Cycle comparison

Pace, intervals, and duration compared with earlier releases on the same platform.

Historical avg for .6 releases

254 days, 4.5 milestones

Based on 2 previous macOS .6 releases

Cycle vs. platform average

43d (avg: 106d)

63 days shorter than the macOS average

Longest gap in this cycle

14 days

Between Beta 1 and Beta 2

Previous .6 releases (macOS)

Previous comparable macOS releases
VersionYearCycleMilestonesAvg. Interval
macOS 26.6202662d710d
macOS 10.62009445d2445d

Scroll horizontally to compare every historical field.

Official release notes