We have already discussed this in the spanish section and is crazy to how can devs say things like this, i mean, if they find a vulnerability then should give precise information about it, but if they say a vulnerability will come is like a crazy prediction.
It isn't a prediction. Luke-jr knows exactly what the vulnerabilities are and is letting everyone know that there exist vulnerabilities and that people should upgrade before he discloses what those vulnerabilities are. By informing everyone that there are vulnerabilities in certain versions, he gives people time (and a reason) to upgrade before malicious actors are able to know what the vulnerabilities are and exploit them.
The whole point of the pre-announcement is so that when the vulnerability details are available (and thus anyone technical could understand and exploit them), everyone will already be upgraded so that it is safe to reveal what the vulnerabilities are.