The newest update for Google’s Wear OS platform is here. And while it’s a full point upgrade, there doesn’t seem to be a lot of major changes to the platform. The Home app gets an update from 2.20 to 2.21, but the update doesn’t bring with it any changes to Google Play Services or security patch updates. So, it looks like this update is more for performance fixes and any bugs that need to be dealt with. To get the latest version, head to Google Play Store on your connected smartphone and download the latest version of the Wear OS app. This should push the update to your smartwatch. Right now, the update seems to have made its way to Montblanc Summit 2, Fossil Sport, and Ticwatch Sport.
Source: Android Authority