The 3DWorld interview posted previously indicates that they had no idea it would be this successful, especially in such a short amount of time. They anticipated that it might last for months before reaching 100%, or possibly never come close. So given that, it's reasonable that they need a few days to make their licensing…
I just upgraded my "potential" license from Basic to Pro. Those extra features like 64 bit, texture baking, and dynamics just might come in handy someday.
Im in! 40$ paid. Just couldnt resist, call me an impulsive shopper :P Also if this program does evolve into something bigger and better in the coming years, i'd rather pay for an upgrade instead of buying the whole shabang for way more bucks.