I don't think there's any incentive for Nvidia to make this a Windows-only device, so most likely it will be fully supported on Linux, just like their GPUs are.

Honestly this looks like Microsoft must have thrown a pile of money at them to not mention it, as it's just too obviously the main question.

No one seriously cares about this running Windows. We want Steam and CUDA/Ollama, and Windows just gets in the way. nVidia are simply not that oblivious, but I have to admit in their position I'd have considered the Microsoft involvement more trouble than it's worth, which is among the many reasons I'm not a billionaire.

Maybe they think the RAM market is so terrible it will kill the whole initiative regardless.

DGX Spark comes with linux out of the box, it would be hard to imagine this device is not also compatible

It's a collaboration with Microsoft so going to say no, probably not.

This is strangely absent from the news.