There is a whole bunch of stuff that you need to have selected to see this update in full, appears to be in parts and to see everything, below are the choices you need to have made in the past.
1) Haven't chosen Emma
2) Choice that leads to being invited to Christine's party is a factor and stuff with Marie is a factor, it's either but not both. This is more related to the dialogue between Sophia and Emma.
3) Dylan speaking up in the saloon about her boob being exposed is a factor, he must let Sophia know, this seems most important
4) Dylan not cupping and feeling Marie's boob is a factor as well
5) Decisions with hobo's in park factor in as well
6) how Dylan reacts to other people with Sophia might be a factor as well
7) It appears like it's either this update or the last update with Sam but not certain.
edit* forgot some things, the decision related to how Dylan reacts to Sophia with other people is a factor as well I think, this is based on dialogue I saw Dylan saying but I didn't see anything per settings. There are a lot of choices related to getting everything in this update.
I personally used this
mod here on F95 which gave me options to quickly change things so I could see the next content. I found it easy to use, just d/l and unzip and place it in the game folder, it will give you options and you can use Shift + M for more advanced options. I have a save for my main game and a new mod adjust save now.
It's actually a really good update and seems a lot of the choices have been leading to this update and the next update. I wonder if the next update is related to Dylan choosing Emma and other outcomes dependent on choices you've made. I think the next update might be an alternative to this update and not a continuation of this update.
This update does use many choice options but it does combine a lot of choices into one path, well maybe 2 paths depending on the next update.
Surprised I'm saying this, the animations really do make the update even better.
It is still too choosy and reliant on choices for me, which the mod really helps a lot with that. L&P still should announce before each update what choices matter in that update, which would help a lot.