The 3DC team covers some of the new UI changes in the latest version.
The latest version for 3D Coat has seen significant improvements and updates, the least of which is a UI refresh and some changes there. Check out this overview for some of the UI changes in 3D Coat 2021.
The tutorial also covers how to optimize and customize the panels and control which panels are visible. The next-gen version of 3DCoat features many improvements and new tools sporting a new brush engine, rich curve tools, low poly modeling, and new sculpt layers.