My argument is going to be that this was stated for wide release for everyone who purchased it in March and was willing to accept specific terms and conditions, then the button was tied to v9, which was subsequently released, but only to the existing beta testers, then it went to v10 or 11, but the next update is 9.1, meaning they can keep pushing out a ton of sub updates.
Clearly they feel it's safe enough for public use because they pushed it out to 71 non employees, which appears to be more based on social influencing ability than driving style/record.
I figure at worst, I don't get the software, at best they don't want to waste money on arbitration fees, and decide to give it to me earlier than I'd otherwise get it.