It doesn't appear that GitHub has announced anything about Discussions on their site yet. My guess is that a few select large repositories (e.g. zeit/next.js) a

It doesn't appear that GitHub has announced anything about Discussions on their site yet. My guess is that a few select large repositories (e.g. zeit/next.js) are trying out the beta to provide feedback. We'll probably get some official communication from GitHub shortly, with the ability to sign up for the beta.