Wait: what about these higher certification? Is there going to be some kind of "master key", controlled by the FIDO alliance (?), that would somehow sign the k

Wait: what about these higher certification? Is there going to be some kind of "master key", controlled by the FIDO alliance (?), that would somehow sign the keys produced by "complying" company X or Y? Making it impossible to come with a software implementation allowing to users to backup their keys? Or are you saying that a software implementation would be totally doable but just wouldn't be officially certified?