A promo image shared by a Chinese OEM on a social network seems to confirm April 2 as the announcement date for new Nvidia SUPER gaming laptops with Intel 10th Gen CPUs. The marketing material from MECHREVO states that the company will be making some revelations about a new product, which could possibly be a Z3 gaming laptop.
https://www.notebookcheck.net/April-2-announcement-date-for-Nvidia-SUPER-gaming-laptops-with-Intel-10th-Gen-CPUs-corroborated-by-MECHREVO-promo-image.458970.0.html