How so? There is absolutely no evidence that the DLC is already done and on the disc - and no, having a couple of incomplete maps walled off around the place with placeholder mobs, and placeholder map markers does not mean that you have a fully complete DLC just sitting there. This is part of the reason this video would be useful because the above comment shows how some members of the community, through no fault of their own, don't recognise what constitutes finished DLC and have been confused by the copious amounts of misinformation being spread on the interwebz.