I would imagine that it's more because the utilization of AVX-512 is low. I'm sure there are lots of applications that make use of it, but many of the instructi

I would imagine that it's more because the utilization of AVX-512 is low. I'm sure there are lots of applications that make use of it, but many of the instructions are bizarre and are maybe useful to just a handful of people. Weigh that against the cost of design and manufacturing, it's not hard to imagine they're finding out it's not worth it. This is just speculation though.