Swift 6.3 released March 24 brings three key improvements to Swift Testing (warning issues, test cancellation, image attachments), the first official Swift SDK for Android enabling cross-platform code sharing with Kotlin/Java apps via Swift Java JNI Core, and the formalized @c attribute for cleaner C interoperability with compile-time signature validation. Xcode 26.3 introduced agentic coding with Claude Agent and OpenAI Codex, supporting full-project reasoning, build execution, and MCP-compatible third-party agents. A reminder that starting April 28, 2026, App Store submissions must target the iOS 26 SDK or later. The 2026 Swift Student Challenge winners were also announced.
27 Impressions