So the new update..... I like it overall and I like the story so I don't want to be too negative about the new content.
First, even though it is outside of the previous story, the update still borked your saves. I had to go back a few scenes in the main story to find a save point that was playable - and even then, it reverted my name back to "Chester" (default MC name). The MC is also called "guardian" but not sure if the MC was previously called "dad" or I am just misremembering that part. There don't seem to be any i-patches, or at least not one on the OP. Anyway, TL;DR = your saves are messed up and you might have to start from scratch (even with the side content) if you want the MC's name to be anything different.
Also, to the best of my recollection, this is the first update for any of the dev's games that appears to use AI in the animations. They aren't bad and are honestly better than most I have seen up to this point but I have to say that it is not an improvement from what this dev was doing before, just... different. I am sure it is A LOT less work and may improve development time, etc. So just personal choice, I guess.
Side note: the AI sequences create some awkward and inauthentic moments. In the scene where the MC is having sex with Suzi for the first time, there is a part of the scene where the MC is fucking Suzi missionary style. Suzi is being propped up by Petal, who is very lightly participating, though mostly just watching VERY UP CLOSE. Anyway, the AI part has this moment where Petal leans down as if to spit in Suzi's mouth and Suzi opens up to welcome it (though no spit comes out). At the last second she purses her lips as if she is blowing a kiss instead rather than swallowing, which also makes the sequence feel just weird and not particularly sexy. Overall, the AI movments make the whole scene feel just slightly out of character for the women.
All of that is to say that while the AI scenes are decent for what they were and were fairly well executed, AI still adds elements of body movement and interactions that are inauthentic to the characters and the experiences they are having -- such as spit play for a woman who has never had sex before.