As mentioned in the link, this seems to be a gradual rollout process into 2026. And the requirements (at least for now) appear to be for all visa-requiring markets/countries. That's a little unclear to me. I have a US Passport and, as others have noted "nationals of USA do not need a visa for a maximum of 90 days," but what if I - USA Citizen.- have a visa to come to SA for a longer time (say to work, study, live, etc.)?