Apple's release candidate build for watchOS 10.1 is now available for testing by beta participants.
Developers taking part in the beta program can acquire the latest versions via the Apple Developer Center or by updating their devices with the beta software. Public beta versions are typically available a short time after the developer releases, via the Apple Beta Software Program.
The release candidate for watchOS 10.1 comes in after the third developer beta, which arrived on October 10. The second was released on October 3, which in turn replaced the first, which Apple brought out on September 27.
The release candidate build of watchOS 10.1 is build number 21S67, replacing the previous build, 21S5063a.
The first watchOS 10.1 beta included NameDrop, which didn't arrive in the main watchOS 10 release.
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.