The circular was issued on 3rd March (Check exact date please) and it comes into force/effect in September (3rd Sept)
I know this because I got my yes bank Reserv card converted to rupay from MC citing that same circular and yes bank initially denied the network change saying "bank decides it not the customer" but when I threatened them to raise the same to RBI ombudsman they did send me the card telling me that the circular comes into effect from Sept but here is your card. (they sent it in July so they are getting prepared) 🙂