Never heard of AFPS 2020 or any such contributory scheme. If they wanted it for 2020 then they would have started work on it in 2017 at the very latest and consultation would have started by now.
Nice rumour - but I suspect it is total bunkum!
As for the other matter, I agree Red Line Entry - that will take a very long time. I also don’t want any changes personally as I am very happy with AFPS15 on my own career profile. So “horses for courses” as they say!