Honest Hearts DLC Northern Passage likely

So I was going around just minding my own business when I decided to go take a look at the Northern Passage again for 2 banana yucca fruit plants that grow in front of it. When I got there I noticed that the boulders that had been there since the game came out, where gone. Instead the entrance is now open, inside there is a tunnel with lanterns leading to a cave entrance that goes straight forward. The entrance say's Mojave Wasteland, but it is likely to say something else when the dlc finally comes out. Be sure to check it out and decide for yourself, but it's glaringly obvious that they are planning to do something with this location.