Its entirely possible that Nissan had some issues behind the scenes (to us) recently over emissions standards, so they promptly issued a "Sports cars?! Us?! No, no, our top priority is to build fuel-efficient lean, green, driving machines!" press release.
For example:
https://globenewswire.com/news-relea...elReports.html
Nothing's official. In the meantime, keep calm and continue Z-ing