During his keynote speech, Phil Spencer of Microsoft announced a wireless adapter for PC. It can apparently be used to connect any wireless Xbox One peripheral on Windows 10. If you watch the presentation, the statement occurred at about 36 minutes and 30 seconds in. It was just a brief acknowledgement of its existence this year.
A similar device existed for the Xbox 360, pictured above, and I used it heavily with controller-friendly games (until the adapter died abruptly). I was not a fan of the directional pad, of course, but the rest of the controller suited the games that I play without a mouse and keyboard. I also used the adapter with the Xbox 360 wireless headset, which was surprisingly good (especially at removing speaker noise).
On the same day, Neowin acquired a leak that claims the company is looking to create a new Xbox One controller. They expect that, if the project doesn't get killed internally, we will see the new controller at E3 2015 in June. The design is supposed to focus on first person shooters and driving titles, but nothing else is known about it. We'll see.