App Store Connect release notes (March 10, 2026): TestFlight now accepts Xcode 26.4 beta 3 builds
A small App Store Connect/TestFlight release note that matters for CI: Apple now allows uploads built with Xcode 26.4 beta 3 (SDKs for the 26.4 beta 4 OS lines) for internal and external testing.
Original update (source): Apple Developer - App Store Connect release notes (March 10, 2026)
What changed
Apple updated App Store Connect/TestFlight to allow uploads built with:
- Xcode 26.4 beta 3
- using the SDKs for iOS 26.4 beta 4, iPadOS 26.4 beta 4, macOS 26.4 beta 4, tvOS 26.4 beta 4, visionOS 26.4 beta 4, and watchOS 26.4 beta 4
…and those builds can be used for internal and external testing through TestFlight.
Why this matters (practically)
This is one of those “one line” notes that causes real-world chaos when you miss it:
- if your CI started using a new Xcode beta and uploads were failing, this is likely the unblock
- if you are about to switch toolchains, it is a reminder to pin versions and treat Xcode upgrades as a release risk (not an engineer preference)
Tiny win
Write down (or paste into your release checklist) one rule your team will follow this quarter:
- either “betas only on a dedicated TestFlight lane”,
- or “pin Xcode for the release branch”,
…so you do not discover toolchain incompatibility at 6pm on ship day.
Read the release notes: https://developer.apple.com/help/app-store-connect/release-notes/
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