TonyBai

Aug 26, 2026 · Backend Development

What’s New in Go 1.27? Generic Methods, JSON v2, and Post‑Quantum Crypto

Go 1.27 introduces generic methods, struct‑literal key selectors, expanded function‑type inference, a complete rewrite of the JSON package with encoding/json/v2, native post‑quantum signature support, a GA goroutine‑leak detector, 30 % faster small‑object allocation, and numerous toolchain and ecosystem refinements that together reshape the language, standard library, runtime, and developer experience.