Sony.yt - International Sony Forum

Sony has announced Sony Game Control Mount GCM10 accessory on IFA press conference in Berlin in September 2014. This device is designed for comfortable connection between Sony's Playstation 4 Dual Shock 4 gamepad and Sony Xperia Z3 / Sony Xperia Z3 dual / Sony Xperia Z3 Compact / Sony Xperia Z3 Tablet Compact device. It will be available soon in black color:

Sony Game Control Mount GCM10 accessory will be available in sale probably in November, but today you can pre-order this control mount accessory on Amazon - the cheapest costs 12,78 GBP or 19.72 euro.

Source: Amazon, Xperia Blog