The total manufacturing run could reach 250-300 JF-17s, but as of right now, the PAF has slotted in 188 JF-17s due by the mid-2020s. If it pursues a Block-IV or Block-V for the 2030-2035 time-frame, then the run will rise to 250-300. However, looking to 2030-2035 isn't a factor right now, so the 250-300 figure doesn't really matter yet.
@messiach -- the PAF CAS told Alan Warnes that the FGFA will be a single seat, twin-engine fighter. He also said the PAF is open to collaborating with allied states, but the final product must be ITAR-free.
This
doesn't sound like what the previous CAS (ACM Sohail Aman) said about Project Azm, working with China, and starting production in just 5-10 years. Is Project Azm basically the "natural evolution" of JF-17 you spoke of (Block-IV/V) and, to deal with replacing F-16s, another FGFA is being sought?