Yes you buy into the beta program, but to be honest, no matter what is written in the contract, i would assume most people would believe that the beta will some day be "not beta"
If people were told straight up, that they paid the money to be part of a beta testing team, with the posibility that this product would never be out of beta, i would think a lot of people would not want to pay.
I was considering the half price option, with NOA, but since my car is going to be without USS and radar, this means that right now 60% of the advertised functions of this system is not available.
Autopart, Summon and Smart summon is deactivated as far as i have read, so only Navigate on autopilot and automatic lane change is available.
If they manage to get the other features working i might consider it in the future, but i don't think they will ever be able to make a reliable autopark feature without the Ultrasonic sensors to be honest.