The following area NPAs/area codes that are slated to be assigned in Canada. As the CRTC has opted that all new/future area codes will be overlays, rather than splits, I have also indicated the EXISITING area codes that they will overlay. Some are already underway, others are planned, and some are quite a ways off. Enjoy!
236 - newest area code assigned for BC as an overlay for all three existing codes (604/250/778)
639 - approved overlay area code for Saskatchewan (306)
431 - overlay code for Manitoba (204)
365 - pending overlay code for Southern Ontario (905/289)
437 - pending overlay code for Toronto Metro (416/647)
672 - code set aside for future relief of BC when 236 exhausts (604/250/778/236)
825 - code set aside for future relief of Alberta (403/780/587)
548 - code set aside for relief of Southern Ontario (519/226)
742 - preferred relief code for future relief of Southern Ontario (905/289/365)
942 - preferred relief code for future relief of the Maritimes (902)
428 - preferred relief code for New Brunswick (506)
879 - preferred relief code for Newfoundland (709)