The central and north eastern portions of Ontario, Canada currently covered by NPAs 249 and 705 will soon get a brand new area code. The new 683 NPA was announced on November 10, 2021 by the Canadian Numbering Administrator as the relief plan for existing overlay complex 249/705, serving cities such as Orillia, Barrie, Peterborough or Sault Sainte Marie.
June 18, 2022 is the date when the new 683 area code is scheduled to enter service. Already served by 2 area codes, 10 digit dialing is currently compulsory for all local calls in this part of Ontario so no change in the way calls are dialed is to be implemented on June 10.
See official planning letter also displaying a detailed map of the area (PDF document).