That was yesterday. If you go to the order page for the FSD upgrade now, you'll find this text:
"The current features require active driver supervision and do not make the vehicle autonomous. The future use of these features without supervision is dependent on achieving reliability far in excess of human drivers as demonstrated by billions of miles of experience, as well as regulatory approval, which may take longer in some jurisdictions. As these self-driving features evolve, your car will be continuously upgraded through over-the-air software updates."