We do not know what Nissan has planned for the Nissan Z. In fact, they have not even confirmed that they are or will be working on a new Nissan Z model but the fans seem to believe that they are developing one.
It seems like the Nissan Z fans really want Nissan to bring the Nissan Z but only if they go back to the roots of it all. The Nissan Z started out as a light and nimble model but from there, it slowly grew in size to become what it is right now.
A lot of people were not too happy with the changes that Nissan made and they are hoping that the next model will also come with a smaller and lighter body like the original. There were speculations about the Nissan Z being design based on the Infiniti Q60 Coupe. If that is the case, the Nissan Z could also be coming with a V6 engine that will be offering about 400hp.