Production started in December 2013
Pakistan Begins Producing Block-II JF-17 Aircraft | The Diplomat - Pakistan Begins Producing Block-II JF-17 Aircraft | The Diplomat
Within 229 effectively completed and another 5-8 at various stages you will have 35 to 40 planes by end of December 2015, more...
My view is that there maybe issues on credit. Check the Sri Lankan disclosure - it was around a loan to allow the purchase. Now with mostly poorer countries being the target market, and Pakistan herself not particularly wealthy and the Chinese (in my view) more interested in selling fighters...
I thought the increased output/shorter life does not need re-engineering. I thought you just overclock the existing design.
The idea of taking 2-3 years to get the RD-93MA means/implies more than merely overclocking.