A Steam Community Group Announcement has details on the release of a new free Dark Fist expansion for Punch Club. The additional content will require you to start a new game. The first rule of punch club is to talk about the expansion, so here's word: "Yes, you will get to figure out what happens to Fluffy the cat. And yes there is a whole side-story to this. We definitely didn't just forget to put the sprite into the new house and made this all up. Search for a briefcase in your house on around day 6." Here's a teaser trailer.