My site is currently on CE 184.108.40.206, is using Paypal but not using Paypal Instant Payment Notification. I read somewhere that all merchants using Paypal MUST upgrade to 220.127.116.11 or apply SUPEE-8167 by June 30, 2017 to avoid service disruptions.
Since I am not using Paypal IPN, will my site really face disruptions if I don't do anything? I prefer to not touch my site for now if the Paypal IPN change does not affect me. Hopefully someone could clarify the sweeping "all merchants must upgrade" statement, since not all are using Paypal IPN.