I expected when Larian did this, they would have pushed it through their digital distributors. I'm disappointed they didn't.
The publishers allowing DRM removal doesn't necessarily mean they are inclined to actively test / promote / distribute the patch themselves. You'd think customer service would encourage them to do so awhile after a game's release, though (or at least as the game price drops that DRM related support would not be worth it for the minor amount of pirating it prevents).
Steam has their own patch release process. If they do add the DRM free executable to automatic updates, there will be a bit of a delay before they can do so (as there was with the patch).
