Go 1.27: Generic Methods, encoding/json/v2 and uuid

Tue, 03 Nov 2026 09:00:00 -0500

Go 1.27 shipped on 2026-08-19 (the current patch release is 1.27.3). It is the release where methods can finally have their own type parameters, encoding/json moves onto the v2 engine, and the standard library gains a uuid package. This page covers what changed, what can break when you bump the go line in go.mod, and how to use the new APIs.

Encoding/Json on Support Tools

Go 1.27: Generic Methods, encoding/json/v2 and uuid