Okay, that's where I was a little confuzzled. Your other post said Master Series Mighty Mini Mustang, not Mini Corsair. AFAIK, there is no Master Series Mighty Mini Mustang (be cool if there was though).
Back to your original question. No, there will not be any new plans for ANY Master Series designs for the foreseeable future. If that ever changes, I will likely be a big announcement from Flite Test and I would definitely share that here. I wouldn't count it though.