Apple has just deployed the dewatchOS update which goes to version 6.1.3. This new version does not bring big changes.
Apple simply clarifies that these are fixes and improvements, including one related to issue preventing proper sending of irregular heartbeat notifications to Apple Watch owners in Iceland .
Normally, you shouldn't be discovering anything new, but let us know in the comments if you find any. Note that this upgrade weighs 54.3 MB.
The Cupertino company also released version 5.3.5 for other users, unable to install watchOS 6.