Xserve ready to make a comeback? 9to5Mac blogs about a report from The Information about M8 servers. The Information says they might use NVLink:

Apple has considered connecting the M8 chips in the server using an Nvidia set of products called NVLink Fusion, which includes switches, chiplets and software that help chips communicate with each other in data centers.

If Apple has to build these for themselves, they might as well sell them. Quite the leap from selling Mac minis to AI enthusiasts.