I believe existing apps have until June to comply with the new rules. We'll see how Apple plays this though. It's not in their best interests to reject the Kindle app.
It's troubling that they seem to be willing to apply one rule to the big, established players and another to everyone else. In the long run I don't think this nurtures a healthy market.
I think that was another commenter's speculation. All we know is that Apple says existing apps have until June 30. It remains to be seen of they make exceptions or not.
