Correct, it's called the Grace Hopper superchip because it using Nvidia Grace CPU (which are ARM) and Nvidia Hopper GPU. For OS, it will run some form of Linux

Correct, it's called the Grace Hopper superchip because it using Nvidia Grace CPU (which are ARM) and Nvidia Hopper GPU. For OS, it will run some form of Linux. I'm not sure if the particular recommended build has been (or will be) publicly released.