Developers can download the new watchOS beta
With the release of watchOS 10.3, Apple has shifted generations and has provided its first developer beta test for watchOS 10.4.
The watchOS 10.4 beta has build number 21T5185g, replacing the 10.3 release candidate, build number 21S644.
AppleInsider and Apple strongly suggest users don’t install beta operating systems or other beta software on “mission-critical” or primary devices, as there is the small chance of issues that could result in the loss of data. Testers should instead use secondary or non-essential hardware and ensure they have sufficient backups of their critical data at all times.
