Given that there are essentially no architectural details here other than bandwidth estimates, and the release timeline is in 2023, how exactly does this count as "unveiling"? Headline should read: "NVidia working on new arm chip due in two years", or something else much more bland.
Not quite. CSCS supercomputing center in Switzerland have already started receiving the hardware (https://www.cscs.ch/science/computer-science-hpc/2021/cscs-d...). Perhaps, we may see some benchmarks. To wider HPC users, it will be only available in 2023 as the article mentioned.
The Alps system at CSCS will have racks with different processors, to be installed in phases. CSCS has taken delivery of the first racks with AMD EPYC processors, for non-GPU workloads. CSCS will be one of the first customers to get their hands on Grace Hopper, but they will have to wait until 2023.