Sony has bid farewell to the Xperia Z in favor of the Xperia Z. They showed off the Xperia X, XA, and X Performance, but we haven't heard a lot since. Now there is rumor of a new X device. The X Premium is rumored to come with an HDR display. This would be a first for a smartphone. The difference is 1.07 billion colors compared to 16.8 million. The display will also have a 120Hz refresh rate and 2,000:1 contrast ration. That's a lot of numbers that should equal a beautiful display.