User blog comment:Xilinoc/Ch. 540 - The Sword Five/@comment-10475621-20130605190703

I agree with everyone saying this was a really great chapter.

As for Zangetsu = Yhwach, I don't think it is meant to be taken literally unless they later state otherwise. While he may resemble Yhwach from a previous time, I think he is meant to represent the quincy side of Ichigo's powers. I don't think he has any memories or agenda that are connected to Ichigo's ancestor.