I would like to ask if such a functionality has been introduced (unfortunately it does not work for me - I have newest version 8.2.8).
Tabs with mousebites on a rounded sections of PCB border would be probably one of the most useful automatic tools when creating panels, because usually break-tabs are used in such cases.
I'd like to ask similar as Marcin question.
I have Version 8.3.12.
FAB 3000 has an interactive capability when adding tabs. In the same command you can add tabs to straight edges (default), Rounded Edges, and even Corners.
Here's a quick demonstration movie (no sound),
Note: Symmetry tab placement is not available for Rounded edges, or Corners.