With submissions open for Apple's latest operating systems, release preparation now means more than simply rebuilding with a new SDK.
The new SDK cycle has moved into shipping mode
Apple says developers can submit apps built for iOS 27, iPadOS 27, macOS 27, tvOS 27, visionOS 27, and watchOS 27. Xcode 27 Release Candidate is available for final compatibility testing.
Visual regressions deserve a dedicated pass
New system design behavior can expose assumptions in navigation, toolbars, sheets, safe areas, typography, and custom controls. Screenshot comparison across supported devices can catch issues that unit tests will not.
Metadata and policy checks belong in the release checklist
A technically compatible binary can still be delayed by privacy declarations, age-rating questions, screenshots, entitlements, in-app purchases, or App Review metadata. Treat App Store Connect validation as part of engineering release work.
Questions readers are asking
Are App Store submissions open for Apple's latest OS releases?
Yes. Apple announced on September 9 that submissions are open for the latest operating-system generation.
Which Xcode version should developers use for final testing?
Apple is directing developers to the Xcode 27 Release Candidate and the latest SDKs.
Should developers test only their iPhone app before submission?
No. Every supported destination, including iPad, Mac, Watch, TV, or Vision Pro where applicable, should receive a compatibility pass.