watchOS 5.0.1 is now available for download. You can grab it by going into the Watch app on your phone and then selecting General > Software Update. Keep in mind that your watch will need to have at least a 50 percent charge and be on a charger in order for you to update.
As for what's included, this is a smaller update, which you might've guessed since it's an x.x.1 release. This update fixes an issue that caused a "small number of users" to see increased exercise minutes as well as an issue that caused some Apple Watch owners to note get Stand credit in the afternoon. Finally, it fixes a bug that could prevent the Apple Watch from charging.
If you've got a compatible Apple Watch, go grab watchOS 5.0.1!