I feel almost silly asking this, but, is the download broken to 2.9.0.1? Any time I try from the main site > Download (https://krita.org/download/krita-desktop/) it just says file not found, and when I go to the source listed for developmental builds and such, (http://files.kde.org/krita/windows/) I only see up to 2.8.93.1 available. This happens on the .msi and the .zip versions.

Eeek, yes. When the files were moved from files to download, they were removed (of course). But the download link is broken indeed, because on download.kde.org we don't have the windows subdirectory.

http://download.kde.org/stable/krita/ has all the downloads.