This is gonna sound like it's coming out of my ass but I was told this by a friend who works at Mob I literally went up to St. Louis to visit them and they passed on some stuff.

Chapter 5 is absolutely going to release in January 2026. Production is moving along smoothly now that the newfags have a year of experience under their belts. They have no plans to take an extra year or whatever to make 5, the justification they gave is that they really can't without the series losing momentum and incurring penalties from partners.

That said 5 is the last one, but they already have a sequel in pre-production. It's called Poppy Playpark and involves Leith Pierre building the titular amusement park as a front for child kidnapping, staffed with a new batch of experiments. Poppy, Huggy and Kissy will return to this new game, as well as the Prototype but he's more of an easter egg at the moment.

5 itself will be what you expect. The Wrongside Outimals are just filler taking up a few sections and getting cutouts. They'll be like the mini-Critters, except this time their "form" can impact their ai and how they attack the Player. Like some will choose to flank you while others just rush in, stuff like that. Huggy of course gets the best stuff. They showed me one section where you're in a mock dollhouse and you're hiding under beds and behind cabinets to avoid him, and another one where he slowly creeps up behind you while you're distracted watching a tape. The Prototype however has a weird prescience, by that I mean you get glimpses of him through out the Chapter but it isn't until the finale that he shows his face he looks like pinocchio without a nose and has normally sized human eyes.

That's all they showed and told me but I'll prod them for more if you're interested.