Google has posted a list of every Android Wear watch that is migrating to Wear OS, the re-branded wearables platform that Google officially announced earlier this morning. For now, there doesn't seem to be anything new with Wear OS compared to the most recent version of Android Wear, and to be clear, Wear OS is not an entirely different platform that will exist alongside Android Wear, it's simply Google's new name for it, though it is worth mentioning that eventually Wear OS will introduce some new features, as it is Android Wear and with a name change Google is obviously intent on keeping the platform alive and taking it further with newer software.
All that said, the list of watches that are moving to Wear OS is generally the same as the list that Google put out confirming which watches would be updated to the Oreo-based version of Android Wear. This includes some of the older watches like the Fossil Q Marshal, CASIO Smart Outdoor Watch, and Michael Kors Access Bradshaw, as well as some of the more recent watches like the Fossil Q Venture and Fossil Q Explorist, the DIESEL Full Guard, Misfit Vapor, Montblanc Summit and quite a few others.
As it stands the update to the Wear OS platform only seems to include the name change on the watch and inside of the app, so when users boot up either one they'll see the new platform name before being taken to the main screen, and that is likely where the changes will stop until an actual version update comes along. As per usual, to get the update on the watch you will want to make sure that it's connected to Wi-Fi, and Google highly recommends making sure you keep the watch on the charger overnight because, well, it needs battery power and it can't stay powered on or connect to Wi-Fi if the battery is dead. Google says the platform update to Wear OS will be getting pushed to all of the watches on its list over the coming days and weeks.