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Release record

tvOS 11.4

Full article
Public release
Recorded milestones
7
Beta cycle
57d
Average interval
10d
Public release
May 29, 2018

Release notes

Overview

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

Release overview

tvOS 11.4 was released on May 29, 2018 with AirPlay 2 multiroom audio, general performance and stability improvements, and security repairs.[1][2]

Evidence boundary

Apple names AirPlay 2 as the release's single consumer feature and leaves other maintenance unspecified. The page does not infer additional behavior from the general improvement label.[3][2]

Source ledger

References

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

  1. About the security content of tvOS 11.4

    Apple Support · Apple · 2018-05-29T00:00:00.000Z · Released May 29, 2018

    Back to text ↑
  2. About Apple TV 4K and Apple TV HD software updates

    Apple Support · Apple · 2026-07-29 · tvOS 11.4

    Back to text ↑
  3. About the security content of tvOS 11.4

    Apple Support · Apple · 2018-05-29T00:00:00.000Z · tvOS 11.4 security content

    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.

security · fixed

tvOS 11.4 security repairs

documentedconfirmed

Apple's advisory documents interception, privilege, code-execution, spoofing, impersonation, disclosure, denial-of-service, and web-processing fixes.

Recorded at Public

  1. [1] About the security content of tvOS 11.4 · Bluetooth; Crash Reporter; FontParser; Kernel; libxpc; LinkPresentation; Messages; Security; UIKit; WebKit

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. +15 days
  4. +6 days
  5. +7 days
  6. +3 days
  7. +12 days

    Public release

    Public

    Full articleEditorially verified

    tvOS 11.4 reached the public channel on May 29, 2018 with AirPlay 2 multiroom audio, general maintenance, and version-specific security repairs.

    Availability
    available
    Sources
    5 linked
    Open this appearance

Historical context

Cycle comparison

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

Historical avg for .4 releases

43 days, 6.0 milestones

Based on 4 previous tvOS .4 releases

Cycle vs. platform average

57d (avg: 58d)

1 days shorter than the tvOS average

Longest gap in this cycle

15 days

Between Beta 2 and Beta 3

Previous .4 releases (tvOS)

Previous comparable tvOS releases
VersionYearCycleMilestonesAvg. Interval
tvOS 26.4202636d67d
tvOS 15.4202246d78d
tvOS 14.4202141d414d
tvOS 13.4202048d78d

Scroll horizontally to compare every historical field.

Official release notes