ReadTheDocs' "latest" version comes from master, which is (usually) an unreleased development version. Most readers would probably prefer "stable" (which is the most-recent release tag).
Should add a banner to the top of "latest" docs pages warning the user it's for unreleased code. Similar to what Django does in their dev-version docs.
I think the best way to do this via JavaScript. (That's how RTD handles inserting their own "you are not using the most up to date version" warning in older versions.)