Hi. I was reading the NSX-T v4.1 system requirements, and it no longer list KVM as being able to be used as Transport Node. Have things changed between 3.x and 4.x now?
Yes that is true, NSX will no longer support either KVM-based hypervisors or OpenStack distributions from third-party vendors
https://docs.vmware.com/en/VMware-NSX/4.0/rn/vmware-nsx-4001-release-notes/index.html
