Is it live? I checked both of my up-to-date macbook air and iphone, and there is no mention of this new "Two-factor authentication" in the settings. In fact,

Is it live? I checked both of my up-to-date macbook air and iphone, and there is no mention of this new "Two-factor authentication" in the settings. In fact, there is the "two-step verification" turned on already in the settings, which I assume is the old way. Anybody seeing it in there devices?