GitHub is experimenting with something new: Spec Kit.
https://visualstudiomagazine.com/articles/2025/09/16/github-spec-kit-experiment-a-lot-of-questions.aspx
The idea is simple but interesting: Treat specs as first-class artifacts that guide design decisions before a single line of code is written. Think CLI tooling (Specify), scaffolding, and a spec → plan → tasks workflow, plus a “constitution” file that bakes in non-negotiable rules (like “tests must run” or “stay on this framework”).
It’s early days, and Microsoft is openly asking for feedback.