Yes but These are approved by Islamabad Development Authority but not. If someone cant pass their project from ISA or CDA they are not allow to even put one brick there.
Answer 1: We have not heard a single word about stealth version of JF-17. Our first priority is BLK 3 of JF-17.
Answer 2: You know our officials don't tell public about any research or development. But some members of PDF do have some intel about new researches. After BLK 3 we should consider...
Turkey is not dumb that they were ready to dumped out of F35 program just for S400. There was a whole reason behind it. Its better to explore Turkish S400 thread rather than aking here.