The link just proxies
http://www.youtube.com/watch?v=jxYnuHX3LCI
The video shows someone clicking through the German Apple website, "discovering" German pages for an alleged iPhone 5.
It is fake, as several people on YouTube pointed out.
Most notably, in the first frame of the video you see a local URL in the browser's address bar. Additionally, there are some spelling errors in the website, like "Grösserer Display" instead of "Größeres Display".