SNK has recently announced that the release of Samurai Shodown netcode will be delayed for some time, but in the meantime, they're revving up another rollback Open Beta for King of Fighters XIII.
The testing will be happening from today, October 3 at 7PM PDT, and until October 9, 7PM PDT. As long as you have a PS4 or PS5, you should be good to go!
So far, SNK has a pretty good record of retrofitting rollback into their olden titles, usually done through incredibly expertise of Code Mystics. Let's hope that XIII lives up to the expectations as well!