I think they are updating the game and not releasing stuff, or I hope so and surely will be a massive update, because there is zero sense to be posting sneak peaks of version 0.1.9 otherwise.
And seriously, every single game that tries to make a remake in the long run sorta of goes far away from their initial vision and end up killing their project on the long run, only a few actually do something smart that is slow the development of the game, and release a remake with a good chunk of the original game on it, or better than that, just update animations/scenes since the majority of games that suffers remakes are usually just Illusion Koikatsu/Honey Select engine, so when they have a solid base they could slowly just update the visuals and scenes instead of a full overhaul, if are going to make a full overhaul at least make it while the game is new so the content disparity is not that big, considering the time of development and update needed to even reach half of the initial product.