My memory is fuzzy, but when I was reserving my Leaf on-line, there was a screen that asked if I wanted the Level 3 charging feature, and I clicked yes. So it was a part of the reservation process for me.
In addition, here is a paste of a chat transcript from Nissan where I asked about the rate of the home chargers. I also have heard the rumor that the initial models won't be able to charge faster than 3.3kW. I guess I could have worded the question better, but here is what Tim said...
Okay...As far as the charging goes, I have heard that the initial rollout will require a 15amp 240volt connection at home, but later the charger might be able to charge faster with a higher rated 240V current?
That's a good question. Let me check on that for you. This will take a few moment.
Yes, the Nissan partner for the home charging dock equipment and installation, Aeronvironment, will be able to install both a 220 V - 30A circuit (will charge in about 4 hours) and 220 V -15A circuits (will charge in about 8 hours). Please give me a moment while I do additional research on that.
Yes, I was able to confirm that if your service panel can take a higher rated current, Aerovironment can run this circuit to you charging dock. This will allow you to charge the vehicle much faster.