Xcode 27’s Release Candidate Targets Six Platforms That Don’t Share a Build Number

On September 9, 2026, Apple shipped release candidates for all six operating systems due September 14, plus the Xcode 27 Release Candidate developers need to build against them. Apple’s own developer release index lists twelve builds across September 8 and 9, and their version numbers share almost nothing: macOS’s build does not even start with...