Packer 1.7.3 supports vsphere 7.0.2?

Is there any official document or release note about the support for vsphere 7.0.2? The current packer version I am using is 1.7.3.

Does packer work with vCentoer or it has to work with esxi direclty? I see most of people work with esxi hypervisor.

It works with vCenter and ESXi, you need to pick the correct plugin. vsphere-iso and vsphere-clone are for vCenter. vmware-iso and vmware-clone are for direct ESXi connections using hacks to get it to work.