Let's hope for smooth upgrades in the next couple of weeks.

I think a friend of mine has ESXi 6.7 running on a pair of R720s in his home lab, but I'm not sure how much work it was to set up. I pulled up the link to the 6.7 image, but there aren't any 12th generation PowerEdge servers shown supported. With 518 days, the development time of vSphere 6.7 was 3 months shorter than the previous version but is still much longer than the release cycles in the vSphere 5 era. 6.7 isn't supported on any platforms that don't have it listed on the support page. Since vSphere 6.0 VMware started to extend their major release cycles.

VMware vSphere Virtual Disk Development Kit 6.7.0.

VMware vSphere Command Line Interface 6.7.

VMware vRealize Orchestrator Plug-In for vSphere Replication 8.1.

If you upgraded to VMware vSphere 6.7 Update 3 from an earlier version and are using VMs that were created with that version, change the VM compatibility to vSphere 6.7 Update 2 and later. The minor updates like 1a, 1b, 2a and so on are not tested, however, they are expected to work fine. VMware vSphere Hypervisor (ESXi) 7.0 and 6.7 U3 and later compatible updates only.

VMware Virtual SAN Witness Appliance 6.7 Citrix performs compatibility tests only with the major updates of VMware vSphere, like Update 1, 2 and so on.

VMware vSphere 6.7 Release Notes and Download Links Today VMware made vSphere 6.7 bits available for everyone to download.

Vmware esxi 6.7 compatibility