2030s... They would have their 6th generation fighter prepared for testing in ten years... it's closer or never. I don't see heavy J-20 production in the 2030s but I can be wrong. I would thing that the next generation superiority fighter would be starting testing in 10 years.The rumors about the redesign of WS-15 are old. If it went back to the redesign stage not a long time ago, we would see WS-15 at J-20 in the 2030s.