You’re oversimplifying the situation. It’s not “just” adding a PHP version. Plesk developers need to prepare and maintain packages for 10+ operating systems, ensuring compatibility and stability across all of them. This requires extensive testing, especially since PHP 8.4 is newly released and barely supported by major projects yet.
Additionally, Plesk operates on a fixed release schedule for new features, which is why updates don’t just roll out immediately. What may seem simple from the outside is, in reality, a complex process involving significant time and resources.
If you want a cutting-edge PHP version without waiting, you always have the option to build it yourself—but don’t underestimate the work involved in making it production-ready for thousands of servers.