A slide from Asus has revealed that the manufacturer believed there would be an Nvidia GeForce RTX 2060 Super Mobile GPU coming from the graphics card company. However, even though there is a GeForce RTX 2080 Super Mobile part and a GeForce RTX 2070 Super Mobile GPU, it appears that there are no further plans for a 2060 variant at the moment.
https://www.notebookcheck.net/Nvidia-GeForce-RTX-2060-Super-Mobile-GPU-listed-on-Asus-slide-but-remains-missing-in-action.459939.0.html
I found this two days ago. Just check the specs of asus strix G15.