The higher power requirements of the GeForce Power series reduces the chances of it debuting on gaming laptops in the near future. Very few existing chassis designs are able to support something as demanding as the 250 W RTX 2080 Super especially when considering that the standard mobile RTX 2080 is just 80 W to 150 W.
https://www.notebookcheck.net/Will-the-GeForce-Super-series-eventually-come-to-laptops-Probably-not.426957.0.html