Most likely the Tesla protocol will be in the adapter, and will convert to CCS to talk to the car. The adapter will also identify itself to the supercharger, and will require the Tesla app on your phone. There will be some type of multi-way handshake going on between the supercharger, the adapter, the phone app, and Tesla HQ.
Still no ETA from Tesla. We all know Tesla is always late, but often does eventually deliver what they promised.
This thing is available for preorders.