Display-only (just a Registry entry), the update itself means Jack for LTSC, as the actual features are blocked via ProductPolicies.
The question is, after I install 25h2 in LTSC, will the system update normally on patch days because the tar with 25h2 won't confuse the system when running WinUpdate? Will it work with the common LTSC updates?
I have mentioned it a few times already, to know that for sure we'll have to wait till the next LCU is released, i would not install the 25H2 EP on LTSC on my main systems, only to test in a (virtual) test environment. And i have said 100s of times before, LTSC should and did never get feature upgrades, that was one of the main purposes of LTSC.. The confusion now is because the applicability list mentions EnterpriseS, it never did on Windows 10 EP's. All 26xx0 updates are in fact 26100 updates, only the small EP makes the difference.
I know but IoT Enterprise LTSC is mainly chosen because it's lightest and already debloated (mostly) out of the box, so mainly for gaming outside of, well, Enterprises. Some new features for it could be could be cool as well, especially if related to gaming, so asking if it's at least possible to install them manually is a legit question.
The remark has nothing to do with this, it was a joke, Enterprise Short Term Servicing Channel. Iot Enterprise 202x LTSC is not (and i hate the use of this term for the purpose it is abused these days) more "debloated then normal Enterprise 202x LTSC, And LTSC is by definition not (specially) meant for gaming, it is an Office use, gamefree, OS (so the clerk keeps their eyes on the job )