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Release record

macOS 15.5

Full article
Public release
Recorded milestones
6
Beta cycle
40d
Average interval
8d
Public release
May 12, 2025

Release notes

Overview

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

Release overview

macOS 15.5 was primarily a maintenance release. Its named consumer-facing change notified parents when a Screen Time passcode was used on a child's device. [1]Developer notes record fixes for large network-share enumeration, Pro Display calibration on M4 MacBook Pro, helper registration, and StoreKit eligibility checks.[2]

Enterprise maintenance

Enterprise changes covered DHCPv6 naming, setup behavior, Platform SSO reliability, repeated screen-sharing alerts, and notice that the AFP client was deprecated.[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 15.5

    Back to text ↑
  2. macOS Sequoia 15.5 Release Notes

    Apple Developer · 2026-07-29 · Resolved Issues

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

    Apple Support · 2026-07-29 · macOS Sequoia 15.5

    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

Helper executable registration fix

documentedconfirmed

Apps using supported Service Management workflows could again register their helper components.

Recorded at Public

  1. [1] macOS Sequoia 15.5 Release Notes · Service Management — Resolved Issues

enhancement · changed

Platform SSO and DHCPv6 improvements

documentedconfirmed

Managed environments received new DHCPv6 behavior and reliability fixes for Platform SSO during update and attestation workflows.

Recorded at Public

  1. [1] What's new for enterprise in macOS Sequoia · macOS Sequoia 15.5

bugFix · fixed

Large network-share enumeration fix

documentedconfirmed

Network shares with substantial directory contents could be listed correctly after the Finder fix.

Recorded at Public

  1. [1] macOS Sequoia 15.5 Release Notes · Finder — Resolved Issues

bugFix · fixed

Pro Display Calibrator reboot fix

documentedconfirmed

A hardware-specific restart during Pro Display Calibrator customization was corrected.

Recorded at Public

  1. [1] macOS Sequoia 15.5 Release Notes · Pro Display Calibrator — Resolved Issues

Milestones

Release history

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

  2. +12 days
  3. +7 days
  4. +7 days
  5. +8 days
  6. +6 days

    Public release

    Public

    Source-linked recordEditorially verified

    The public macOS 15.5 release concentrated on Screen Time, network shares, display calibration, helper registration, managed networking, and Platform SSO reliability.

    Availability
    available
    Sources
    6 linked
    Open this appearance

Historical context

Cycle comparison

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

Historical avg for .5 releases

42 days, 6.0 milestones

Based on 1 previous macOS .5 releases

Cycle vs. platform average

40d (avg: 106d)

66 days shorter than the macOS average

Longest gap in this cycle

12 days

Between Beta 1 and Beta 2

Previous .5 releases (macOS)

Previous comparable macOS releases
VersionYearCycleMilestonesAvg. Interval
macOS 26.5202642d68d

Scroll horizontally to compare every historical field.

Official release notes