Apple has announced a new test version of watchOS 9.1 for smart watch owners.
What is known
The firmware was released with the prefix "Release Candidate". That is, this is a pre-release version of the software. The next firmware will be stable and available to all users.
As for the list of changes, in the systemworked on autonomy during outdoor walks and running by reducing heart rate measurement and GPS readings on Apple Watch Series 8, Apple Watch SE (2nd generation) and Apple Watch Ultra. In addition, Apple's smart watches added support for standard Matter for smart gadgets and the ability to download music via Wi-Fi or a mobile network without the need to connect the device to a charger.