What you see on top is the Sony A7r modified in a way to look like a sort of Leica M camera :)
You can see a tons of pictures of the process on Weibo.com. Here are just a few of them where you can see the single modifications:
First they removed the plastic cover and than the top EVF:
The Sony TOP plate got removed with a Leica TOP plate from an older camera:
Than they removed the Alpha Logo and replaced it with the Leica Logo:
And here is the final product:
