According to the official changelog released by Naughty Underworld, here are the headline features of this update:

Naughty Underworld has already teased a roadmap. According to their latest dev log, v04a1 is the first of two "A" updates (Alpha branch). The next, v04b1, will focus on the game’s secret "Occult Stat" system and introduce a new male love interest. A final is tentatively scheduled for early 2027.

New paths and dialogue options that reveal the deeper mysteries of the underworld. 💡 Gameplay Tips & Walkthrough

Somewhere, deep in the underworld—the naughty underworld—a developer watched the logs and whispered, "Update successful."