Nothing majorly new in this update art wise, few scenes but more on the couple of frames level than substantial enough to be put in the games own Gallery, quite a few QoL changes though, so managed to find that out quicker than before.
If you get stuck I advise you to click on the '?' coin in the top right to talk to Sonya, hover over the name 'Sonya' and hit 'Customise' here you can change how clear the notebook's instructions are, v helpful.
I did not check any content before Act 2, which a few good changes seem to be done, but I slogged through it when it was bad, I don't intend to do it again no matter how much easier it is, respectable that the devs are trying to clean up the mess though I suppose.
If you're looking for new content give this update a miss imo