The PLAAF has been playing the number of J-20s or J-20As pretty close to the vest. The Chinese press is stating there are between 75 to 90 J-20s in
service. It's unclear whether or not the last 15 are still in acceptance, being built now, or something else.
Reports are popping up from pilots and other PLAAF personnel of an upgrade coming to the J-20. This will be a 2d thrust vectoring system like the
F-22.