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Release record

iPadOS 16.4

Full article
Public release
Recorded milestones
6
Beta cycle
39d
Average interval
8d
Public release
Mar 27, 2023

Release notes

Overview

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

iPadOS 16.4 added 21 emoji, Home Screen web-app notifications, and wider duplicate detection in iCloud Shared Photo Library. Supported M2 iPad Pro models gained Apple Pencil hover previews that accounted for tilt and azimuth.[1]

The release also introduced an accessibility option to dim flashing video and corrected Apple Pencil responsiveness, Ask to Buy delivery, and Matter thermostat behavior. Eligible developers could enroll devices in betas directly through Software Update.[2][3]

Source ledger

References

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

  1. About iPadOS 16 Updates

    Apple Support · 2026-07-29 · iPadOS 16.4 — enhancements

    Back to text ↑
  2. iOS & iPadOS 16.4 Release Notes

    Apple Developer · 2026-07-29 · Beta enrollment for iPhone and iPad — New Features

    Back to text ↑
  3. About iPadOS 16 Updates

    Apple Support · 2026-07-29 · iPadOS 16.4 — fixes

    Back to text ↑
  4. iOS & iPadOS 16.4 Release Notes

    Apple Developer · 2026-07-29 · iOS & iPadOS 16.4 Release Notes

  5. About iPadOS 16 Updates

    Apple Support · 2026-07-29 · iPadOS 16.4

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.

enhancement · introduced

Shared Library duplicate detection

documentedconfirmed

The Duplicates album expanded to iCloud Shared Photo Library content.

Recorded at Public

  1. [1] About iPadOS 16 Updates · iPadOS 16.4 — enhancements

developerApi · introduced

Settings-based developer beta enrollment

documentedconfirmed

Developer beta enrollment moved into Settings > General > Software Update for eligible program members.

Recorded at Public

  1. [1] iOS & iPadOS 16.4 Release Notes · Beta enrollment for iPhone and iPad — New Features

feature · introduced

Twenty-one additional emoji

documentedconfirmed

The emoji keyboard gained 21 additional characters.

Recorded at Public

  1. [1] About iPadOS 16 Updates · iPadOS 16.4 — enhancements

enhancement · introduced

Apple Pencil hover angle preview

documentedconfirmed

Apple Pencil hover began previewing a mark’s angle using tilt and azimuth on supported M2 iPad Pro models.

Recorded at Public

  1. [1] About iPadOS 16 Updates · iPadOS 16.4 — enhancements

feature · introduced

Automatic flashing-light dimming

documentedconfirmed

Users could enable automatic dimming for detected flashes or strobe effects in video.

Recorded at Public

  1. [1] About iPadOS 16 Updates · iPadOS 16.4 — enhancements

feature · introduced

Home Screen web-app notifications

documentedconfirmed

Home Screen web apps gained notification support.

Recorded at Public

  1. [1] About iPadOS 16 Updates · iPadOS 16.4 — enhancements

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. +8 days
  5. +6 days
  6. +6 days

    Public release

    Public

    Source-linked recordEditorially verified

    iPadOS 16.4 expanded emoji, Apple Pencil hover, web-app notifications, Photos, accessibility, and settings-based beta enrollment.

    Availability
    available
    Sources
    3 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

42 days, 6.5 milestones

Based on 6 previous iPadOS .4 releases

Cycle vs. platform average

39d (avg: 51d)

12 days shorter than the iPadOS average

Longest gap in this cycle

12 days

Between Beta 1 and Beta 2

Previous .4 releases (iPadOS)

Previous comparable iPadOS releases
VersionYearCycleMilestonesAvg. Interval
iPadOS 26.4202636d76d
iPadOS 18.4202538d76d
iPadOS 17.4202440d77d
iPadOS 15.4202246d78d
iPadOS 14.4202141d414d
iPadOS 13.4202048d78d

Scroll horizontally to compare every historical field.

Official release notes