Ah, OK, I think I understand now.
Discourse 2.0.0.beta3 is production ready - it’s what we’re running right here on Meta and for our customers. If you’re looking for Discourse 2.0.0 stable, you’ll need to wait a few months. Keep in mind that stable is not guaranteed to be more “stable” than tests-passed - it is simply updated less frequently and therefore you get a controlled set of bugs, but not necessarily less bugs. See Which branch of Discourse is used internally? for more details.