Sadly they don't have the license to use IIHF jerseys and logos. But with the World Cup of Hockey, which is organized by the NHL, coming up in September EA have already announced that there will be a gamemode for it in NHL 17. In the
"Vision" trailer you get a glimpse of the mode and you can see the REAL logos for the 8 teams participating in the tournament(Canada, USA, Russia, Sweden, Finland, Czech Republic, Team North America and Team Europe) which should guarantee the real jerseys aswell. The sad part is that there probably wont be authentic jerseys for the rest of the international teams, if they're even included at all.