I'll write my 2 cents here in case the Dev reads this and I'll try to keep things to simple critique as possible without sounding too negative, but lets be clear first... the game itself as is, is still S tier, so with that being said...
#1: As everyone said, the new art is... weird, to say the least, she looks like 2 different characters and its massively noticeable and doesn't look very good. If the original artist doesn't want to do more, or something else is going on, then so be it, but the "new" art definitely needs a touch-up or re-do. The original art at times, also looked like "baby's first 2d art project" but at least it solidified the looks of Catherine and made us all love her, so keeping the art as close to that as possible, would be the best move.
#2: You got rid of the brewing system(almost, you can still interact with it, if you go to the 'recollection' menu, the brewing system icon is still there and still clickable and still allows you to brew drinks) and that is a great start, but the "click z at the right time" bartending 'mini-game' really needs to go as well. It would look better and be more fun to interact with, if you simply added the drink art, BEHIND Catherine along the counter and allowed people to mouse-click on them **one time** or arrow key + z click on them **one time** and just simply choose a drink, or just add the art of the drinks behind her and remove all the annoying menu clicking alltogether and just have a "make drink" button and be done with it. I get it, making the mini games is fun, but its exhausting to the player. The mini-games need to be remade to be unimaginably simple, or just thrown out. All of the art for the scenes in which she interacts with the chuds and has orgasms or whatever, can easily stay and shouldn't need unnecessary repeated clicks just to see the fun stuff. /rant
#3: Sound: Music is great, voice acting from Catherine in some spots is awful. Like the noise of her sucking on a bottle is.... just awful to listen too, as it sounds like someone forcing themselves to super-suck something and not trying to be "sexy" about it all, as if the entire recording was 'forced'.
#4: I know 1-3 is a lot, but also new content is sorely needed, last few updates have had nothing really happening at all. With that in mind, the "obstacles" of dirt and random objects all over the floor in different scenes, makes them so annoying to traverse, like rock piles, fire hydrants, lamp posts. These are all things that cause the player to have to click EVEN MORE just to get around them and they're absolutely irritating. You could easily leave them there for aesthetics/background but make them passable just by simple walking over them. That would be a welcomed update by everyone and its a tiny change which would make a huge impact, you'd be surprised how many extra clicks it is, especially in the sewers.
Anyways, still love the game, and still looking forward too some juicy updates.