When a feature is fully launched, it means that we will fully support it from a technical support perspective.
If you already have the feature enabled in beta, then the only change you will see is that the feature disappears from the Beta Feature page and you are no longer able to disable the feature.
If you do not have the feature enabled and you have the relevant package, then the feature will become visible in your account.
If you do not have the feature enabled and you do not have the relevant package, then the feature will not become visible in your account.