I’ve been waiting for this for years! There has been images shows for an Xbox handheld. A patent application filed by Microsoft on 9 July 2019 shows what the portable system could look like. Xbox handheld seems to attach to, and charges, a touchscreen device, like a smartphone. Clipping onto the screen to make sure it’s a secure playable time. The picture shows a controller in two halves, which clip to either side of a smartphone, turning it into a handheld gaming console, featuring all the buttons on Xbox controllers including the left and right triggers on the top. The way the controller halves clip to the sides of the phone means that they don’t overlap on the screen. With possibilities to communicate via wi-fi, they also come with built-in stereo speakers, and a headphone jack for that full immersive audio experience.