I think we're assuming an awful lot from one tweet. Personally, i agree with the guy who said that he was moving on from this 'gimmick', meaning the girl he was currently working on. The event appears to be our hero walking by a cage full of dog (wolf?) monster girls while they try to tempt him to fuck them. It's not a real monster like the others who roam in the world, its almost like an event such as the ghost with the red sheet in the temple.
As mentioned previously, i think the game still has quite a way to go before it's done, though the technical limitations are being more apparent by the day. If Zell did decide to wrap it up, i'm sure he'd do more officially with an endgame boss and such.