What details does Bruno mention that suggest his life has changed?

In Chapter 17, Bruno mentions several things that suggest his life has changed. At the beginning of the chapter, Bruno overhears his mother and father arguing in his father's office. Bruno's mother was yelling at her husband about his appalling job, and she tells him that she needs to leave for Berlin with the children. Bruno remembers how he felt about Berlin and mentions that so many things have changed since he left. He cannot remember the names of two of his three friends, and says that they have probably forgotten about him by now. His grandmother has passed away, and his grandfather has gone senile. Bruno also mentions that he's grown used to "Out-With." Bruno initially was worried about studying with Herr Liszt, but says he doesn't mind him anymore. Bruno also mentions that he is getting along much better with Maria than he ever thought possible. Bruno says that Gretel is going through a phase where she is not as annoying, and his afternoon conversations with Shmuel bring him joy. Bruno's new feelings of satisfaction drastically differ from his original feelings about his new home and life.