Reportedly, Fitbit is planning to launch two new smartwatches this spring, both successors to existing models. Supposedly, Fitbit has made a few changes with the Sense 2 and Versa 4, although there is no sign of Wear OS 3 yet.
https://www.notebookcheck.net/Fitbit-Sense-2-and-Fitbit-Versa-4-leak-with-spring-launch-date-targeted.617383.0.html