User blog comment:Oyaya/Future Young Justice members/@comment-3465526-20110822041609/@comment-432124-20110822043226

I'm not so sure about that. Even now, a few episodes are still in production. That would mean that when they got the rights to Wonder Girl, a lot of the Season 1 episodes were either still in production or not even produced and none of them had aired yet. So she might make an appearance earlier than you would expect.