Swift Package Index (SPI) has joined Apple, signaling a major step toward a trustworthy, official Swift package registry with improved discovery, signing, and distribution. Separately, the Swift compiler is moving toward self-hosting by dropping the requirement to build using only a C++ toolchain — core components like the Parser, AST, and Type Checker can now be written in Swift. The newsletter also highlights: a Swift-like environment running on an Apple II with a 1 MHz 6502 CPU, a WebAssembly-based OTA update system for native Swift iOS apps using WasmKit, deep dives into SwiftUI's attribute graph internals, SwiftUI toolbar API improvements from WWDC 26, a private UIKit _UIPortalView component for live mirroring effects, and an iOS Simulator camera extension tool for testing camera-dependent features.
