FAA is introducing UPRT, some other nations are following suit. I haven't got my notes for the ICAO ref.
The Europeans are dragging their heels a bit.
The law will affect you when your Indian DGCA mandates it.
The important thing to remember is that you need the right simulator for it. you can't just take any old 320 sim and do a 120 degree AoB recovery, or stalls. There are not many sims in the world that have been modified yet.
Not only is there to be the flight characteristics (except G obviously) but the iOS panel has to support instructor visibility of the trainees' control inputs (eg warnings on rudder use, and the g load graph).