Steam store pages received a new Anti-cheat field. Disclosure is mandatory for kernel-level anti-cheat solutions. And recommended for other anti-cheat solutions (like server-side or non-kernel-level client-side).
The field discloses the anti-cheat product, whether it is a kernel-level installation, and whether it uninstalls with the product or requires manual removal to remove.
Except when all you get is an UAC prompt when clicking the play button, without giving you any information, other than that it wants to execute an exe in a temp dir with a random name.