After a month of testing, Apple today dropped the release candidate build of watchOS 26.4 to developers. The update is live for both developers and public beta testers. watchOS 26.4 is expected to bring several new features and changes to the Apple Watch.
Apple is seeding the watchOS 26.4 release candidate update with 23T239 build number. The update for testers weighs 470MB in download size. The update is available to everyone running on watchOS 26 or newer. If you’re unaware, a release candidate build is essentially the final version, made available to developers before the public release. We can expect public release later this week or early next week.
Talking about changes, watchOS 26.4 brings 8 new emojis, along with other features, bug fixes, and security updates. iOS 26.4 also brings notable additions for Apple Watch with watchOS 26.4: a revamped watch face gallery with downloadable packs, end-to-end encrypted RCS messaging in beta, a new “Urgent” Reminders smart list with auto-alarm, Indian English localization support, and further refinements.
watchOS 26.4 RC Update
First things first, you need to update your iPhone to iOS 26.4 release candidate. Once done, you can follow these steps to install the watchOS 26.4 release candidate on your watch.
- Open the Watch app on your iPhone.
- Tap General > Software Update.
- Select Beta Updates and enable watchOS 26.4 Developer Beta option.
- Go back and download the release candidate of watchOS 26.4.
- That’s it.
Make sure that your Apple Watch is charged at least 50% and connected to a WiFi network.
Now the watchOS 26.4 release candidate update will download and transfer to your Apple Watch.
Explore More:
- watchOS 26.4 beta 4 update now available for developers!
- Apple releases watchOS 26.3 update to the public
- Apple releases iOS 26.3 to the public – Here’s what’s new
- How to change Liquid Glass transparency on iPhone [iOS 26.1+]
- How to Turn a Voice Memo into a Custom Ringtone on iPhone with iOS 26
- How to Reduce the Liquid Glass Effect on Your iPhone Running iOS 26
- How to Activate 3D Spatial Wallpaper on iPhone (iOS 26)

