We have a report that Benedict implied in an informal chat with Rabbi David Rosen.

Seeing as how there is a lot of dispute about Pius XII and what he did, and did not do regarding the Holocaust, and the Vatican has refused to released records, this is a refreshing change.

That being said, this is probably more about John Paul II than it is about Pius XII.

It appears (from the Wiki) that somewhere around half of all saints ever made were made by JPII, and my guess is that Benedict is looking at shutting down the pipeline that was left him, because he finds it excessive.