iLounge tells us that Apple has sent out a second note to would be $99-level iPhone SDK developers:
“We have many more requests than we can serve during this initial beta period, so we must limit the Program at this time. We plan to expand it during the beta period, and we will contact you regarding your enrollment status at the appropriate time. We appreciate your patience.”
This follows up on last week's far more confusing note, and the rampant speculation it caused.