Millions of iPhone and iPod touch customers will move to iPhone OS 3.0 this summer. Beginning today, all submissions to the App Store will be reviewed on the latest beta of iPhone 3.0. If your app submission is not compatible with the iPhone OS 3.0, it will not be approved.
Existing apps in the App Store should already run on iPhone OS 3.0 without modification, but you should test your existing apps with the iPhone OS 3.0 to ensure there are no compatibility issues. After iPhone OS 3.0 becomes available to customers, any app that is incompatible with iPhone OS 3.0 may be removed from the App Store.
Although a possible purge of old, incompatible apps from the App Store should appeal to many who find it cluttered, Apple hints that the transition should be a smooth one and that existing apps in the App Store should experience no compatibility issues with iPhone 3.0. The new iPhone software as well as possible new hardware are expected around the same time or soon after Apple’s WWDC event on June 8-12 in San Francisco.