Google has so far confirmed that only a handful of current and upcoming smartwatches will be upgradeable to Wear OS 3 later this year.
These Snapdragon Wear platforms are capable of supporting Wear OS 3.0
Wear OS - Wikipedia
Google Fit is missing from Wear OS 3 - The Verge
Wear OS - Wikipedia
New and Improved Features of Wear OS 4 in Galaxy Watch 6
Wear OS 3.0 version of the Google Play Store starts arriving on existing Wear OS smartwatches - News
The 6 best Android smartwatches in 2024 - The Verge
Wear OS 3 Smartwatches Now Support WhatsApp Voice Calls
Pixel Watch: All the Rumors We Know Ahead of Google's Smartwatch Reveal - CNET
Google Smartwatch: Rumors, Specs, Release Date, and More
These smartwatches will be upgraded to Wear OS 3.0 - 9to5Google
These smartwatches will be upgraded to Wear OS 3.0 - 9to5Google
Google reveals Wear OS 3 update path for current watches - 9to5Google
Google Pixel Watch to cost more than equivalent Samsung Galaxy Watch5 at launch - News
New Wear OS 3 screenshots give sneak peek of what's to come » YugaTech