My mistake - I forgot to add that:
Some digital distribution versions (such as Steam) have their own system for releasing patches, hotfixes etc... If you bought your game through one of these vendors, then you will not be able to install this hotfix. We are working on getting it distributed through those services.
We're sending it through to them now and hopefully it'll get released soon, but that's a process outside of our control.
I hope the game becomes availible on Impulse when the hotfix is put up there.