Huawei has started rolling out a new update to the Watch 3 and Watch 3 Pro globally. This month's update expands message replies to third-party party apps, adds a sleep mode and enables a switch for cycling between paired headphones and speakers.
https://www.notebookcheck.net/Huawei-Watch-3-and-Watch-3-Pro-receive-new-features-via-an-extensive-update.579627.0.html