This movie does not include the Hyjal you are familiar with. It is the Hyjal that will be accessible through Caverns of Time. It's an updated version of Hyjal you might say. It also includes Zul'Aman, an unopened instance in Ghostlands.
This movie is not about the editing, it's about the content which is hopefully new to many people. It's done on 2.0.6 patch, all live.