No, there's no such link yet (that I'm aware of). You could read about Class Composition with Roles (near the bottom of the page) and the follow up at Perl 6 roles, but I fear those won't be much clearer. Perl 6 roles are pretty much the same thing as traits, though they allow state and runtime role assignment.

Right now, I'm just trying to guage programmer knowledge and opinions about traits to see if there's anything to follow up with.