When is the car scheduled to be available for sale? Subtract 6-8 months from there and that's likely when it will be released. If nissan wants to be clever, they'll show the concept version of the Z (not some render) to get people talking and then a few months later follow it up with the production car. You don't want to release the car too early as people will forget about it (or lose interest) before it comes out. It's about releasing the right information at the right time to build the most excitement.