This issue was originally opened by @nilic as hashicorp/packer#9645. It was migrated here as a result of the Packer plugin split. The original body of the issue is below.

Currently, the vsphere-iso builder allows exporting the created template only in OVF format, while vmware-iso also has OVA support. OVA is in many cases preferred because of template portability (one file with OVA vs multiple files with OVF) and sometimes required, since some of the automation tooling (such as Terraform provider for vCloud Director) supports only OVA as input for catalog uploads.