Apple Releases Xcode 26.5 With Enhanced AI Coding Assistant and StoreKit Subscription Testing

Apple’s Xcode is the primary development tool for platforms including iPhone, iPad and Mac, and version 26.5 integrates Swift 6.3.2 and six version 26.5 SDKs. The update brings AI assistance and StoreKit billing tests into the same development workflow, affecting code-generation efficiency and prelaunch transaction verification for subscription apps. The release did not involve any financial amount.

Apple released Xcode 26.5 in May 2026, according to a May 15 report by iThome. The AI assistant added message queuing and the ability for agents to proactively ask follow-up questions, while fixing an OAuth token expiration error in Claude Code. StoreKit Testing added an automatically renewing plan billed monthly with a 12-month commitment, allowing developers to simulate subscriptions and transactions through Transaction Manager.