Haruka Kanata and Sakura/Ino ending were brought after the written test. Viva Rock and Kanashimi wo Yasashisa Ni were introduced when the prelims ended. I think it is rather logical that now when the Chuunin Exam is basicly over and the war is starting a new ending and an opening is introduced along with a double episode.

The new ending was better than any previous one in my opinion. The animation for the ending was kinda weird with the Beavis/Buttheadish Naruto standing there. But it is way better than Viva Rock and Sakura/Ino ending animations. They both tried to be funny but failed miserably.