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.
I’ve also received this notice from Apple. Even it does make sense I didn’t expect it now; especially when you’re about to submit an application to the App Store.
If all developers need to resubmit their app before June, in order to make it work with OS 3.0, I’m really afraid that the approval phase will take a lot of time.