Atlus got the message.
Atlus and Arc System Works announced that Persona 4 Arena Ultimax will have an update next summer that will add Rollback Netcode on Playstation 4 and PC.
As a reminder, Person 4 Sand was originally released on Playstation 3, and has had several Next-Gen ports for more than ten years.
The game arrives on Steam on March 17, 2022. There will therefore be a few months between the official release and its patch specially designed to implement the Rollback Netcode.
Here is a video statement from game producer Kazuhisa Wada: