New @bitCast Semantics and LLVM Backend Improvements
Summary
Zig's June 2026 devlog details major backend and build system updates: a redesigned @bitCast with logical bit-layout semantics across backends, improved LLVM integer lowering, and ELF linker progress with fast incremental builds; plus a major Build System rewrite to serialize configuration for faster zig build, and notes on incremental compilation and std I/O changes. It also covers package management enhancements and the ongoing libc integration.