Kinect had a lot of promise when Microsoft first released it back in 2010, but it completely failed to take off in any meaningful way. It was basically dead the second Microsoft stopped bundling it with the Xbox One,but now it's truly passed onto another realm now that Microsoft has discontinued the camera's USB adaptor.
If you remember the launch of the Xbox One S you'll remember that Microsoft ditched the dedicated Kinect port, meaning anyone wanting to use the camera had to use a USB adaptor to plug it into their console. That design choice continued with the Xbox One X. It was only a matter of time until the company stopped making the camera altogether, which happened last October.
So really the fact it's stopped making the adaptor is just a formality, but it was a necessary step for the Kinect to finally, properly, kick the bucket.
A Microsoft spokesperson said the followinf to Polygon:
“After careful consideration, we decided to stop manufacturing the Xbox Kinect Adapter to focus attention on launching new, higher fan-requested gaming accessories across Xbox One and Windows 10.”
It should probably focus on making decent exclusives as well, because at the moment there are no games that make an Xbox One worth owning. I mean Halo Wars 2 and Gears of War 4 were fine, but they're not exactly must-haves.
So from now on anyone needing a Kinect adaptor for whatever reason will be forced to head to places like eBay or CEX, where these things will likely be available in an abundance. They seem to be quite expensive at the moment, but once this initial panic is over they'll probably end up costing £10-£20 or something. [Polygon via Ubergizmo]