Don't be a chump! Why wait for the new domestic trailer for Harry Potter when you can watch this Japanese version right now? Maybe because it has Japanese narration, glowing Japanese subtitles, and that annoying little picture-in-picture thing so ubiquitous in Japanese television. But if you're OK with all that, here it is:
I prefer it when the picture-in-picture thing gives me constant reaction shots of other people, so I know how to react to things if I suddenly become Japanese.