Half the county has already changed over a few months ago. Rest is going this Friday.
They have added a OPS 3/4 now also (DMR)
Wallaceburg CACC has wanted to get away from dispatching the dept for years.. and now Sarnia Fire is taking it over.
You might have noticed the change in departments calling dispatch, too. They use to say their dept. name and vehicle but now its broken up into the county. So, St. Clair County has six stations or so.
Example, Port Lambton use to just say "Port Lambton Pumper 54 responding". Now, it's "St. Clair Station 5 responding". Or just "Station 5 Pumper 54 responding".
More or less nothing is really changing other then departments have to say Sarnia Dispatch rather than Wallaceburg. No idea what the OPS3/4 will be used for yet.