Hey, first of all, I appreciate you taking the time to detail your thoughts and write such a comprehensive post. It always fills me with the warm and fuzzies when people connect with our work on that level. Thanks for making my night.
To answer your question, this next update will cover a couple of days in the timeline. It probably doesn't sound like much, but both are rather packed with content in between weaving the event of the player character's birthday around Mina, Hana, and Kathleen's story lines. The update after that will cover Veronica, Rosalind, and Felicia's story lines for week 2, and the third and final update of chapter 3 will be the exhibition.
I'm crossing my fingers that the next update will come quicker this one. The last update finished just before the holiday season, which ended up slowing us down some.