This evening, Apple surprisingly released watchOS 6.1.3 (17S811) and watchOS 5.3.5 (16U652) for all users.
The new Apple Watch updates are available for download as usual via the Apple Watch application on the iPhone. The watchOS 6.1.3 update contains some bug fixes and improvements - no new features are included. The new version is intended to fix a problem that prevented notifications for irregular heart rhythms. The update description states:
This update includes improvements and bug fixes, including an issue where irregular heart rhythm notifications weren't working as expected for Apple Watch owners in Iceland. Some features may not be available in all countries or regions.
While watchOS 6.1.3 is intended to fix a country-specific issue, watchOS 5.3.5 also includes important fixes. (Photo by Denis Rozhnovsky / Bigstockphoto)