This is what's most bewildering about people saying "it's not the next PES, they're JUST testing the netcode". It's like, do you guys even know what that means? Literally what is the point of testing a random game you don't plan to release to "test the servers"?
Not to mention all the other stuff in it that would be bizarre for a non-game test-only release: stadium announcer with all these lines, souped-up gameplan, continuous in-play/out-of-play animations, new control scheme with PlayStation pad explainers, pre-game cutscenes, a new defending system, etc etc.
The idea that they've created all those changes just for a weird test code that isn't the base for the next main sequel is even more insane than Konami are.