Release changelog not updating

Two places I'd expect to see details on the latest emscripten releases, but are stale:

1- https://emscripten.org/docs/introducing_emscripten/release_notes.html (showing up to 3.1.9)
2- https://github.com/emscripten-core/emscripten/releases (only shows 3.0, maybe just delete if GH won't be used to track releases?)

According to ChangeLog.md 3.1.15 is out, but I thought 3.1.9 was the latest since I only checked the docs 😄 Is there some existing channel or mailing group I can subscribe to for release announcements?