If you are looking for the actual document or the latest build, the most reliable sources are:
While specific "papers" are often hosted on developer platforms (like Patreon or Subscribestar), version 0.8.1 generally includes: TP: The Class Next Door [v0.8.1]
: Refinements to the UI and save-game compatibility from previous versions (v0.8.0). Where to Find the Official "Paper" (Guide) If you are looking for the actual document
: Updated "stats" (like charm or intelligence) that influence how you interact with NPCs. TP: The Class Next Door [v0.8.1]