Edit:

Just a heads up: Some of the early birds who played the update reported that their older save files worked, so they didn’t need to start a new game.

It is finished, alas, I'm not happy with how it went.
Over the past 2-3 days, I've been dealing with some unexpected problems after updating the game engine/SDK. This caused some major errors, like the left-click on the mouse not working at all. It took a bit of time, but I've managed to iron out these issues and get everything running smoothly again.
Unfortunately, after fixing everything, I noticed that the update has somehow screwed up all(?) the save files. This means (probably) you'll need to start a new game for your choices to work properly. 
I know this is a hassle, and I'm really sorry for the inconvenience.
So in short,  start a new game and create a new save file, setting up your relationships how you want them. Then just skip over the previous content until you reach the end of the last update, or wherever you want to continue from. 

As I previously mentioned the size, here's the final rundown: I've added 228 new renders and 17 animations (including the edited ones), along with around 2800 lines of new code. There are also some fresh sound effects and background music to enhance your experience. Plus, all scenes now have an XXX route if your previous choices have unlocked them (the last scene actually can go 3 different routes).

Because of the problems I had with the SDK, if you find any bug/error/missing image, etc., drop a DM.

I hope you enjoy the new content! As always, your feedback is invaluable, so don't hesitate to let me know your thoughts, and stay awesome!