RIP Kinect: 2010-2017(ish)
Microsoft is no longer producing the USB Kinect Adapter needed to hook the latest version of the depth-sensing camera's proprietary connection to an Xbox One S, Xbox One X, or PC.
The adapter, which was briefly offered for free to Xbox One S purchasers through last March, was subsequently sold for $40 to users who still wanted to use the camera and voice-activated microphone array on more modern hardware. But Microsoft has now confirmed to Polygon that the adapter is no longer being produced, so Microsoft can "focus attention on launching new, higher fan-requested gaming accessories across Xbox One and Windows 10."
While the adapter can still be purchased second-hand (often at a significant premium), and the Kinect can still be used with original Xbox One hardware (or in Microsoft's Redmond campus store), the move is a clear, final nail in the coffin regarding any continued Kinect support on Microsoft's part.