The announcement is a bit misleading then:
> Linked cloning will happen automatically if your system supports it. Providers other than VirtualBox and VMware can be updated outside of Vagrant to support linked cloning automatically.
> Linked cloning will happen automatically if your system supports it. Providers other than VirtualBox and VMware can be updated outside of Vagrant to support linked cloning automatically.
After you enable it, you'll have to `vagrant destroy` before you see the benefits though. Linked clones are from scratch.