App Store Connect (June 25, 2026): you can now upload apps built with Xcode 26.6

Original post (source): Apple - “Release Notes” (App Store Connect update, June 25, 2026)

• https://developer.apple.com/app-store-connect/release-notes/

What changed

Apple updated App Store Connect so you can now upload apps built with Xcode 26.6 using the SDKs for:

• iOS 26.5 RC
• iPadOS 26.5 RC
• macOS 26.5 RC
• visionOS 26.5 RC
• tvOS 26.5 RC
• watchOS 26.5 RC

…for:

• App Store submission
• internal TestFlight testing
• external TestFlight testing

Why this matters (for growth teams, not just engineers)

This is tooling news, but it shows up as a scheduling constraint the moment you plan a launch around a new OS cycle.

If your engineering team is already on the newest Xcode, App Store Connect support is the gate. Until it flips, you can end up with:

• “Ready” builds that still can’t be submitted.
• A compressed window for review, localisation QA, and store asset finalisation.
• Marketing dates set to a toolchain milestone you didn’t realise you had.

Tiny win

If you have a release anywhere near an OS / Xcode transition:

1. Add a single line to your launch checklist: “ASC accepts our Xcode/SDK for App Store + TestFlight.”
2. Treat the first accepted upload as the real moment to lock your “asset freeze” date (screenshots, CPP variants, in-app event copy), not the day you finish the brief.

Editor: App Store Marketing Editorial Team