No new V6 Engine will be made so most likely going to be Electric or reusing the current engine mated with a hybrid battery. Z is most likely 4 to 6 years away. Its okay though because no matter what they decide it probably wont make it over here unless theyre full EV or plug in Hybrids! For a new audience ofcourse.
https://www.motorauthority.com/news/1142705_nissan-boss-next-gen-gt-r-and-z-confirmed