This game is structured as the following:
A. Prologue, which contains Episode 1 - 7, and a choice that decides whether you'd like to continue the main story or go into Emma's solo endings (as of Sept 2024)
B. Chapter 1, which follows to Prologue's Episode 7. Chapter 1 contains 4 episodes.
Thus, as of Sept 2024, Chapter 1 EP4 is the latest update.
Chapter 2 is planned but dev is working on his other game, Sicae, which basically the prequel to the MBML universe timeline.