I inquired to Tesla about the opening of the charger, here's the response:
"Hi Mike,
Thank you for reaching out. We are in the final stages of construction and hope to open the station in Coralville sometime next week. That being said, we cannot make guarantees about opening dates.
Once the station is open to the public it will get posted on our website and in your vehicle within 24 hours. We look forward to seeing you at the station once it is fully operational and we appreciate your enthusiasm and support for Tesla and our Supercharger technology.
Thank you,
The Tesla Supercharger Team"