AI is all the rage, and Nvidia is making billions on it, so, I'm not surprised they are gushing about that side of it. I hope that doesn't confuse people about the architectural significance.
Nvidia is starting from the GPU architecture, and, melding the fast ARM CPU into it. This is, finally, breaking the artificial barrier between fast CPU and fast Nvidia dGPU.
Yes, Apple already did it with their own M-series, but, hasn't (yet) scaled the GPU side all the way up. This will be a challenge to Apple.
But, the real threat is to x86. x86 was obsolete the day it was born, and yet, still lives on. This will likely finally kill it. (A long slow death of course. But, x86-based quarterly profits will sag first.) Intel and AMD had better figure out how to join the party.