Wise Turtle Publishing

Is there going to be OVA material on handling over-the-top martial arts ala Ranma 1/2 and Street Fighter?

I doubt there will be a martial-arts specific supplement, per se. OVA already includes rules (specifically, Power Moves) that were largely inspired by both Ranma 1/2 and Street Fighter.

That said, should their be a ninja/samurai/etc. book, martial arts may get additional coverage.