On October 20th, Windows 10 users will finally be able to use their Xbox One controllers without the need to plug in a micro-USB cable. Any accessories that plug into the controller will also be accessible while using the new wireless adapter. This is especially beneficial to gamers who have an extensive living room set up using their computer instead of a gaming console. The features and uses of the controller will not be any different from plugging it in, including the ability to stream your Xbox One games to your computer.
Most new game releases are fully compatible with Xbox One controllers, and will even adapt to match the controller. For example, Dragon Age: Inquisition will present a completely different user interface in order to match a more controller friendly play-style.
Keep in mind that the adapter will only work on Windows 10. If you are still using Windows 7 or Windows 8.1, then you will need to download the drivers from here:
Windows 10 is currently a free upgrade for all Windows 7 and Windows 8.1 users.
The Xbox Wireless Adapter for Windows releases on October 20, 2015 at a price point of $24.99. While there is no definite confirmation, it will presumably be carried in most major retailers, local and online.
The Official Xbox Site: http://www.xbox.com/en-US/xbox-one/accessories/controllers/windows-10-wireless-adapter/