watchOS 4.0

The watch music experience was rebuilt for easier browsing and a larger rotating local library, with curated mixes requiring Apple Music.

Recorded at Public

1. [1] watchOS 4 brings more intelligence and fitness features to Apple Watch · Intelligence — Music
2. [2] About watchOS 4 Updates · watchOS 4 — Music

The update brought headline summaries to the wrist and added quick full-screen illumination controls.

Recorded at Public

1. [1] About watchOS 4 Updates · watchOS 4 — Other features and improvements

watchOS 4 refreshed workout navigation and introduced a dedicated HIIT type intended to improve calorie estimates for interval sessions.

Recorded at Public

1. [1] watchOS 4 brings more intelligence and fitness features to Apple Watch · Fitness
2. [2] About watchOS 4 Updates · watchOS 4 — Workout

watchOS 4 substantially broadened current and historical cardiovascular metrics, with some measurements and inactive high-rate notifications limited to Series 1 and later.

Recorded at Public

1. [1] About watchOS 4 Updates · watchOS 4 — Heart Rate

A collection of smaller additions improved communication, scheduling, text entry, timing, navigation, and suggested responses.

Recorded at Public

1. [1] About watchOS 4 Updates · watchOS 4 — Other features and improvements

The release reduced interruptions and made audio control more immediate during exercise, with automatic playlist startup limited to Apple Watch Series 1 and later.

Recorded at Public

1. [1] About watchOS 4 Updates · watchOS 4 — Workout

The update better represented back-to-back training and added automatic set analysis for supported swimming workouts.

Recorded at Public

1. [1] watchOS 4 brings more intelligence and fitness features to Apple Watch · Fitness
2. [2] About watchOS 4 Updates · watchOS 4 — Workout

The app used recent activity to tailor encouragement and goals, added full-screen achievement animations, and included workout context in social replies.

Recorded at Public

1. [1] watchOS 4 brings more intelligence and fitness features to Apple Watch · Intelligence
2. [2] About watchOS 4 Updates · watchOS 4 — Activity

watchOS 4 added two more linear navigation options for switching among recent apps and finding installed software.

Recorded at Public

1. [1] About watchOS 4 Updates · watchOS 4 — Other features and improvements

Apple's living advisory records a broad set of repairs, including newer TLS enablement, memory-safety and information-disclosure fixes, certificate validation, and malicious web-content handling.

Recorded at Public

1. [1] About the security content of watchOS 4 · 802.1X; CFNetwork; CoreAudio; CoreText; HFS; ImageIO; Kernel; libarchive; libxml2; Security; SQLite; WebKit

The face collection expanded with proactive information, animated character designs, image-derived patterns, and complications for Siri, News, Heart Rate, Now Playing, and Messages.

Recorded at Public

1. [1] watchOS 4 brings more intelligence and fitness features to Apple Watch · Intelligence; Watch Faces and Bands
2. [2] About watchOS 4 Updates · watchOS 4 — Watch Faces