It turns out that the M1 Chips are MCM capable, and we are probably going to see the Desktop variants soon.
https://www.tomshardware.com/news/pics-of-apple-m1-max-hint-at-incoming-chiplet-designs
Capable of scaling out to 40 CPU cores and 128 GPU cores


https://www.tomshardware.com/news/pics-of-apple-m1-max-hint-at-incoming-chiplet-designs
Capable of scaling out to 40 CPU cores and 128 GPU cores