A new area code will be introduced on March 19, 2011 as a relief plan for existing area code 705 of Ontario, Canada. The new area code 249 will overlay 705 covering the same area. Larger cities that will be served by the new overlay complex: Barrie, North Bay, Peterborough, Sudbury.
Mandatory 10 digit dialing will be introduced on March 19, 2011 for all telephone numbers in both area codes 705 and 249. Starting January 15, 2011 an announcement will be heard by those dialing 7 digit local numbers within area code 705, informing them of the soon to be introduced 10 digit mandatory dialing.
See NANPA announcement and map of new overlay complex 705/249 (in PDF format)