Android Oreo's notification dots are coming to Android Wear
The indicator dot can be turned off by developers, and replaced by other methods that show the number of unread notifications. One possibility is to have this number show up in the system tray. Developers can also find a unique spot to display the number of unread notifications that works well with a particular Android Wear watch design.
With the latest version of the Android Wear SDK, developers will be able to control how often complications are refreshed on the device. A complication is any feature on a smartwatch that displays more than just hours and minutes. App writers can have these updated every minute instead of every second. Doing that will result in better battery life for an Android Wear powered timepiece.
Google says that it has released a number of updates that improve the performance of smartwatches running Android Wear, and plans on pushing out many more updates in the months ahead.