AsteroidOS, best described as an open source alternative to watchOS and Wear OS, launched its first stable release yesterday. Designed by a small group of developers and open to the public, the OS can run on a few Wear OS-compatible smartwatches, including devices from LG, Asus, and Sony.
https://www.notebookcheck.net/AsteroidOS-1-0-an-open-source-smartwatch-OS-released-for-certain-Android-Wear-watches.303604.0.html