I was looking through the files just in case they added a spoiler in the files while everyone was busy with the Halloween content. I myself was to busy working on the Halloween pages on my website to look for spoilers until today.
I found the Springfield Firehouse in the language and building animation file. We could be seeing that Firefighter update for our next Level Update. I also found a job named “Teach Kids about Fire Safety” which is most likely the text for the Springfield Firehouse job.
Update Oct. 3rd
The Springfield Firehouse was removed from the language database in the latest update, but I found another hidden file for us to speculate on. Tennis Marge dialog image, we might see a Tennis Marge outfit/skin.
Found even more Dolph Starbeam is in the files now.