Not sure how Spoilers work so I flagged this for Spoilers and NSFW. This quotation comes from Crimson Flower;

"We who rule the shadows will eradicate those who slither in the dark."

Obviously it is full of the pomp and arrogance of Hubert, that I tend to like when those qualities reflect well for me, lol. And it might not be anything major, especially with the description of the DLC being pre-time skip. That being said I don't think the developers would play their whole hand. I feel like at the minimum the DLC will have some great fan service interaction beyond hopefully a dope side story and new classes and such, but man wouldn't it be wild if the Ashen Wolves' Cindered SHADOWS side story somehow also led to implications with dealing with TWSITD? I just wanna Aymyr Thales to the face, yo.