https://wccftech.com/watchos-4-3-1-for-apple-watch-released-heres-the-changelog/

The latest watchOS 4.3.1 operating system for Apple Watch users is now available to download. It’s a minor upgrade and we have the complete changelog here.

It almost seems as if watchOS hasn’t seen an update in years although that is not true at all. Despite the UI being consistent with the first release from a few years ago, watchOS has been making leaps in several different areas leading up to this day. For example, it was only recently Apple introduced a far more improved heart-rate monitoring system and watchOS 4.3 improves drastically in the performance department. Today’s release might not be big on features but it’s definitely a step in the right direction when it comes to under the hood improvements.