Today Apple has released a relatively small update for the Apple Watch Series 2 and later, with watchOS 6.1.3 which does include some important bug fixes.
watchOS 6.1.3 includes a fix for when the Apple Watch would prevent the irregular heart rhythm notification coming through, which is obviously pretty critical.
“This update includes improvements and bug fixes, including a fix for an issue that prevented the irregular heart rhythm notification from working as expected for Apple Watch owners in Iceland.
This update also comes just under a month after watchOS 6.1.2 was released. Users who are still running iOS 12 on iPhone, watchOS 5.3.5 has also been released.