"Beginning today, all submissions to the App Store will be reviewed on the latest beta of iPhone OS 3.0. If your app submission is not compatible with iPhone OS 3.0, it will not be approved."
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According to an email sent to developers of iPhone apps. This is yet an other proof of how bad are iPhone developers treated.
Edited: I forgot to say that they have to pay a 99$ fee if they want to debug their apps agaist 3.0
