Multi Arch Clusters

I am having trouble tracking down a definitive answer to this question. Does Openshift 4.4 support clusters which include multiple processor architectures? (AMD, ARM, ppc, z, etc). Docker provides multiarchitecture images. As far as I can tell, Kube supports different worker nodes having different processor types. Even OCP 4.4 has NFD (Node Feature Discovery) and alludes to the capability of multiarchitecture builds with this functionality (https://www.openshift.com/blog/building-multiarch-imagestream-with-the-nfd-operator-and-openshift-4). There is also the SRO which provides support for different hardware capabilities. But, nothing ever explicitly says that a single cluster can have multiple processor architectures in it.