The CC installer is bugging me to install 25.4.1, as shown in the highlighted portion of this screenshot. But the "view more" link leads to https://helpx.adobe.com/illustrator/user-guide.html/illustrator/using/whats-new.ug.html, which only describes 25.3.

I personally am in the prerelease program, so I can dig up the release notes and see that 25.4.0 is a release that fixes a dozen or so small bugs that haven't affected me, but most people aren't. And 25.4.1 is a total mystery, with nothing in the prerelease section. Can we get the public "what's new" page updated to say that 25.4.0 fixes a bunch of the top uservoice bugs, and that 25.4.1 does... whatever it does?