"Amazon did not say when its iPad app will be available"
Which means it hasn't been approved yet, just like everyone else's, assuming even that it is ready or has been submitted.
And there is plenty of wiggle room in the dev agreement for Apple to reject it quite legitimately. Devs are encouraged not to duplicate existing functionality. (e.g. to compete with Apple)
Really all Amazon can say is "we plan to make kindle available and we hope that crazy sociopath Jobs is willing to compete with us."
How likely is that really though ?


