The Sony is not in a rush with their signature Xperia smartphone brand. Currently, a few smartphones can simultaneously run two operating systems. So today, it would be appropriate to the appearance of the new Dual operating system Smartphone like the concept of Sony Xperia R.
Sony Xperia R concept smartphone is a based on a Dual Boot operating system of Android 5.1 and the Windows Phone 8.1. The Xperia R Concept device also has a variety of colors for you to choose as gray, white, cyan, pink and many more. The front of the device with a scratch-resistant tempered glass while the back panel is made of hard plastic with anti-fingerprints coating.
The Sony Xperia R screen size of a 4.5 inches with a protective coating to prevent scratching, boosts pixel density of 398ppi, a resolution is likely, 1280×720 pixels. Designers also integrated sensors to automatically monitor or adjust the brightness in all weather conditions and optimize for battery life.
The Xperia R Concept smartphone is powered by a Snapdragon 801 SoC, a 2.0 GHz Quad-core processor (Cortex-A9), 2GB RAM, 16GB of internal memory. The design of the Sony concept phone seems to be a cross between the iPhone and Lumia with 13-megapixel camera on the back can shoot 1080p video, while the front with a 3-megapixel camera.
(Also see Sony Xperia O concept Smartphone design)
I would like to believe that someday Sony will release something like that.