This "Universal Control Plane" thing looks pretty enterprisy. I have to imagine they are ramping up an enterprise sales team now, with all the org changes that come along with that. This product sort of reminds me of Citrix and Xenserver.
Note that the price you mention is yearly. A node is anything you can install Docker Engine on. Typically it's a physical or virtual server. All nodes are combined into a swarm, which you can manage from the control plane.