Thanks to TheOddOne for finding this.
Source: It's in the magazine. There's a bit more to the article, but it's just speculation that this sounds rather expensive.Xbox World Magazine said:The next Xbox will be a matt-black media hub with a mission to bring games to life in your living room with augmented reality, directional sound, and a four-player finger-tracking Kinect. We told you all that last month. This month, our sources tell us it will have a touchscreen, too.
Microsoft are experimenting with a tablet-like controller with a shape closer to Sony's sleek Vita handheld / Apple's iPad than Wii U's bulky unit - it's an HD screen surrounded by the traditional 360 buttons and sticks.
On 360 that touchscreen will be second only to Kinect in how you operate your console. It could be a remote control when you're watching TV, a browser when you're on the internet, extra buttons and information when playing a game or a portable display when you want to take your game with you.
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Expect to see the next Xbox at E3 this June.