Samsung is rolling out a new update to the Galaxy Watch4 to consumers in the US, the Netherlands, and a few other regions across the globe. The update brings new watch faces, support for backups, and an improved heart rate measurement algorithm. The update also carries the November security patch.
https://www.notebookcheck.net/Samsung-improves-the-Galaxy-Watch4-to-fight-the-Apple-Watch-Series-7-with-a-new-update.576467.0.html