On Wednesday Apple released an update to iTunes. You can read Macworld’s article about it here.
After reading through the comments I realized a lot of people were having problems finding the new wish list feature. The wish list is now part of the menu that previously housed the Preview history. To access the wish list click the three horizontal lines to the left of the iTunes store button. In the screenshot below you can see the wish list is available as I browse my Movie section of iTunes.
A Borrowed Idea 