As noted recently, Linux Mint has begun working on Wayland support for Cinnamon but they don't anticipate it being entirely ready until 2026. With today's Cinnamon 6.0 release there is the initial Wayland session files and their other early Wayland fruits but it's still very much a work in progress.
Cinnamon 6.0 also adds a color picker for its screenshot service, XDG protal configuration, and a variety of other changes as outlined in the 6.0 change-log .