https://wccftech.com/oreo-android-wear-lg-watch-sport/

Google recently released Android 8.1 for the compatible Nexus and Pixel devices. Following the streak, the tech giant has now released Oreo for Android Wear. In October, Google introduced Oreo beta program for LG Watch Sport, and now it has become the first smartwatch to get the update.

A Google developer advocate in the Android Wear community on Google+ says that the “Android Oreo roll out to Android Wear is starting today.” But, “Timing is determined by each watch’s manufacturer.” So, yeah, it means that ultimately OEMs will be responsible for rolling out the update for their wearables. As for Google, it has done its part by releasing the update.