Apple: All app updates must support the iPhone X and iOS 11 come July
Apple posted a note to developers this week saying that, soon, all new app updates in the iOS App Store must support both the iPhone X's display—that is, the notch and the phone's unique screen dimensions—and the iOS 11 SDK. The company will begin enforcing this rule in July.
This is the next phase in a series of announcements and changes from Apple to guide developers into supporting new hardware and software. In February, Apple said that all submissions of new apps must support these same features. In this case, it's not just new apps that have to comply: iOS 11 and iPhone X support will be required to submit updates for existing apps too.