Rust Gets an Official Language Specification!
2025-03-30

After years of growth, Rust is finally getting an official language specification! This is thanks to Ferrous Systems generously donating their Ferrocene Language Specification (FLS). FLS provides a structured and detailed reference for Rust's syntax, semantics, and behavior, previously used for compiler qualification. This donation will avoid confusion from multiple Rust specifications and significantly supports Rust's use in safety-critical industries. The Rust project team will integrate FLS with the existing Rust reference to create an official Rust specification, benefiting developers everywhere.
Development
Specification