Play all routes/paths until you find all the medals (You don't need to finish the route/path. I know since I haven't finished Hoss' and still marked it as found). When you do, you'll be dropped at the new path
For now there is updates only on patreon ... The last public update was on March 2023. In Kemono Party you can see a little details about the patreon updates and some posts, but the links are linked to an account on itchio with patreon. So unless someone leaks the updates we dont gonna have access to them.