This update includes improvements for your Apple Watch.
Changes include the ability to reduce frequency of heart rate and GPS readings on Series 8 and Ultra Apple Watch models for extended battery life. Music downloads while off charger and support for Matter.
You can find the full release notes for watchOS 9.1 here:
● watchOS 9.1 Release Notes
Developers can download watchOS 9.1 RC1 from the link below. Please download the iClarified app or follow iClarified on Twitter, Facebook, YouTube, and RSS to be notified when the software update is officially released.