I've seen the videos of that. Its a tiny area blocked off that we haven't been able to get to yet. There's no way to tell if thats part of DLC , for all we know it could have something to do with an event in the coming weeks. And even if it is part of the DLC, I wouldn't be shocked to see small things retained for a later time. Granted, entire zones, missions, strikes, and raids would be a problem.