Google has decided not to limit the re-branding of its own operating system for smart watches and has released a preview build Wear OS for developers, which is based on Android P.
The main focus of Google is to increase ease of use hours by improving their interface and other innovations. For example, now by default will use the dark theme (which appeared recently in one of the updates), and the battery life should increase due to the restrictions on applications running in the background and disable the radios (wifi and Bluetooth) is in idle mode.
To try out a new build Wear OS until only the owners of smart hours Huawei Huawei Watch 2 and Watch 2 Classic. To download the firmware on the official website of Google developers. There you can find instructions for installing the image to watch.