Won't be 21st Century, as they're long dead and gone. Hell, I'm not even sure if JSI is still at it, and they're the ones in possession of a number of the old 21st Century Toys molds.
Man, anyone else remember when JSI showed those F-15I and J-11BS prototypes?
I didn't know 21st was gone. As was mentioned in this thread before, there isn't a big market for high-detail, high-price 1/18s.