Release record

watchOS 4.1

Full article
Public release
Recorded milestones
5
Beta cycle
34d
Average interval
9d
Public release
Oct 31, 2017

Release notes

Overview

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

Release overview

watchOS 4.1 was released on October 31, 2017 with Series 3 music streaming and radio, Siri music playback, GymKit, a cellular-model Wi-Fi control, multiple targeted corrections, and security repairs.[1][2][3]

Evidence boundary

Music streaming and Radio are identified for Apple Watch Series 3, and the Wi-Fi disconnect control is limited to Series 3 GPS + Cellular. GymKit is assigned here because Apple's final version history places it in 4.1 rather than the 4.0 launch.[4][3]

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 watchOS 4.1

    Apple Support · Apple · 2017-10-31T00:00:00.000Z · Released October 31, 2017

    Back to text ↑
  2. Apple security updates (2016 to 2017)

    Apple Support · Apple · 2023-11-06T00:00:00.000Z · watchOS 4.1 — 31 Oct 2017

    Back to text ↑
  3. About watchOS 4 Updates

    Apple Support · Apple · 2026-07-30 · watchOS 4.1

    Back to text ↑
  4. watchOS 4 brings more intelligence and fitness features to Apple Watch

    Apple Newsroom · Apple · 2017-06-05T00:00:00.000Z · Fitness — GymKit preview

    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

Text, kernel, archive, and scoped Wi-Fi repairs

documentedconfirmed

Apple's advisory distinguishes the affected multicast Wi-Fi models from an unicast KRACK class that it says did not affect any Apple Watch model.

Recorded at Public

  1. [1] About the security content of watchOS 4.1 · CoreText; Kernel; StreamingZip; Wi-Fi

feature · introduced

Wi-Fi disconnect control

documentedconfirmed

The hardware-specific control let users leave the current Wi-Fi network directly from the watch.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — Wi-Fi

bugFix · fixed

Alarm, charging, complication, and dictation corrections

documentedconfirmed

Four targeted corrections addressed tactile alerts, charging reliability on original Apple Watch hardware, missing solar information, and localization defaults.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — silent alarms through Mandarin dictation

feature · introduced

Radio app on Apple Watch Series 3

documentedconfirmed

The release added live and programmed radio listening on supported Series 3 hardware.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — Radio

feature · introduced

Siri music discovery and playback

documentedconfirmed

Voice requests expanded from controls into music discovery and selection across supported catalogs.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — Siri music

bugFix · fixed

Heart Rate and Stand notification corrections

documentedconfirmed

The update aligned Heart Rate alerts with the user's enabled state and repaired two Activity standing-notification display or delivery problems.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — Heart Rate and Stand fixes

feature · introduced

Apple Music and iCloud Music Library streaming

documentedconfirmed

Supported Series 3 models could access cloud-hosted music without first synchronizing each track for local playback.

Recorded at Public

  1. [1] About watchOS 4 Updates · watchOS 4.1 — music streaming

Milestones

Release history

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

  1. +12 days
  2. +7 days
  3. +4 days
  4. +11 days

    Public release

    Public

    Full articleEditorially verified

    watchOS 4.1 reached the public channel on October 31, 2017 with Series 3 streaming and radio, Siri music, GymKit, Wi-Fi control, reliability corrections, and scoped security repairs.

    Availability
    available
    Sources
    13 linked
    Open this appearance

Historical context

Cycle comparison

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

Historical avg for .1 releases

41 days, 5.5 milestones

Based on 11 previous watchOS .1 releases

Cycle vs. platform average

34d (avg: 58d)

24 days shorter than the watchOS average

Duration ranking

#44 of 49

Middle of the pack watchOS beta cycles

Longest gap in this cycle

12 days

Between Beta 1 and Beta 2

Previous .1 releases (watchOS)

Previous comparable watchOS releases
VersionYearCycleMilestonesAvg. Interval
watchOS 9.1202240d77d
watchOS 8.1202134d76d
watchOS 7.1202049d512d
watchOS 6.1.1201935d59d
watchOS 6.1201936d67d
watchOS 5.2.1201946d512d

Scroll horizontally to compare every historical field.

Official release notes