Apple today seeded the fourth beta of an upcoming watchOS 9.1 update to developers for testing purposes, with the new beta coming one week after Apple released the third watchOS 9.1 beta.
To install watchOS 9.1, developers will need to download the configuration profile from the Apple Developer Center. Once installed, watchOS 9.1 can be downloaded through the dedicated Apple Watch app on the iPhone by going to General > Software update. To update to new software, an Apple Watch needs to have 50 percent battery life, it must be placed on the charger, and it needs to be in range of the iPhone.
We don’t yet know what’s included in the watchOS 9.1 update as no new features have been found in the betas, but watchOS 9 brought a number of changes including a redesigned Compass app, a new medication tracking feature, updated watch faces, improvements to Workouts, new features for the ECG app, and more.