When it comes right down to it, its not unusual for devs to put unfinished content in with the final game as well. If they were only able to finish a small amount, its worth it for it to be on the disc, so that not as much has to be downloaded when the rest of said content is released. As much as its possible some of these areas may be part of the DLC when it is released, the argument that we are paying for content that is finished and already included on the disc is just ridiculous.