iPad Air 2 dummy prototype with TouchID button but no sound on/off button?

Photos of an iPad Air 2 with TouchID button - Nowhereelse.fr

Marketed by a specialist as well as some Chinese dealers Japanese site, the model in question is supposed to be an exact replica of the next tablet from Apple.

Here is some photos of an iPad Air 2 dummy prototype. The strange thing in these photos is that it doesn't have a sound/orientation on/off button. I wonder why? This is the first iPad Air 2 dummy I've seen yet. Of course it could just be a fantasy on how it will look, and it could look completely different, but probably not.