Xbox One controllers and accessories are supported by the new console. The new system won't support the Xbox 360 controller or Xbox 360 Kinect. When approached, a Microsoft spokesperson provided us with the following statement:
"Xbox One was designed from the ground up with entirely new technology to deliver a new generation of experiences for both games and entertainment For example, the Wireless Controller will connect to the console using high speed data transfer to enable higher fidelity headset audio and future controller add-on experiences that are not possible with Xbox 360 wireless technology. Additionally, the all-new Kinect sensor's ability to locate the wireless controller is dependent on new technology. In order for Xbox One to deliver robust, meaningful gaming scenarios for all users across all experiences, only Xbox One controllers and accessories will work with the new console."Microsoft previously confirmed to Polygon and Engadget the Xbox One won't support the Xbox 360 controller or Xbox 360 Kinect respectively. Neither is surprising, given Microsoft's new system has a redesigned controller and a next-gen edition of the Kinect sensor.
However, while it isn't explicitly said, Microsoft's statement seems to indicate the Xbox One won't support any Xbox 360 accessories. When asked on Twitter if the new system supports Xbox 360 headsets, Xbox Support reiterated the statement we received, saying, "Only Xbox One accessories will work with Xbox One, which helps us deliver better headset audio and other benefits."