My guess is that we will get something from the community like previous years and maybe we will also get a new pack announcement. The offer where you will get three additional items for Cottage Living ends September 4th so it seems likely that maybe they will announce something by then.
I also think we will get spiral staircases since there are a set of spiral staircases in a tower in Finchwick in Henford on Bagley which seems like a hint. But I think that will be released when it's done, probably with a larger update in november like when we got platforms last year.
