I discovered an unboxing/ review video of the Wii U premium Black Edition that I have preordered a looong time ago. It worths to check it out, it's in 1080p and you get a clear look of what's inside the box. Also at the end of the vid is noted that more videos will come up once the EU Embargo is lifted up
[youtube]
http://www.youtube.com/watch?v=HB7arUmfe64&feature=g-user-u[/youtube]