Board Thread:General Discussion/@comment-10266932-20130531151056/@comment-11051098-20130903135701

Exactly what do you mean? Zangetsu is a "soul cutter"/Zanpakutô. Hollow Ichigo is the "real" Zangetsu, but Ichigo have chosen to accept both Zangetsu and his Quincy powers as his Zanpakutô.

Whatever that would mean in reality, I'm not sure of, but Zangetsu is now "complete" in that it's now based on an Asauchi, and that Zangetsu's power is not suppressed by Old Man anymore.