This should be a drop-in upgrade for v6 applications except the changes in the import paths.
The only breaking change comes in form of implementing custom strategies. Now, strategies do not have to implement the makeSlug method and only implement the makeSlugUnique method. Also, the makeSlugUnique method now receives an instance of the model instead of the model class.
3.0.0 (2025-03-09)
Full Changelog: v2.2.1...v3.0.0