There hasn't really been anything substantially new in a few years now really. The Dev gets kinda stuck in a cycle of overcomplicating things and writing elaborate things that are very hard to execute, then apologising for taking a very long time on patreon.
He kinda needs to stop advancing and focus on catching up at least the core group of characters with small neat updates. That will make the game feel great and allow players to do pathfinding for what/who interests them, whereas currently if you're lucky and like one of the girls or storlyines he has tons of content for you're pleased but if you liked something that was hinted at and is likely to never be completed you'll be dissapointed no matter how far the game advances.
I'm saying this as a former sub and an experienced game developer.
The biggest content updates have been a massively elaborate side quest for the president of the students, and promises of some canteen shenanigans, and some weird side trip to someone who sponsors the school's house.
Imagine instead if the more boring but more important tidying up of stage one-two with each of the characters had been completed?