Well, it happened. The DotNetMagic UI library went commercial. Very sad, as the "free tool" community really needs something like this. Fortunately, the free last version will continue to be available, it just won't be enhanced.
Interestingly, from my quicky reading of the license there's nothing to prevent someone else from taking that snapshot of the source code and continuing it as a free open source library. But maybe I'm misinterpreting.