I'm not surprised to see a review from WolfheartFPS, he did a few live streams and he was obviously enjoying the game a lot.
I've seen several comments stating that the current KCD actually includes acts 1 & 2, and the 3rd act was supposed to be a later release. But I haven't seen any answer from Warhorse Studios about that next version, only "we can't say anything", as if they couldn't simply explain the situation...
There have been rumours that they were working on it, but no solid reference. After all this time, I wouldn't count on it but who knows, maybe one day we'll have a nice surprise.