An official Xbox video for the unboxing of Xbox One reveals that the console will indeed include an Xbox One headset. Statement before from Microsoft were that a headset would not be included which would have been a back step from the Xbox 360 as that included a headset in every box. With the inclusion of this and the Kinect sensor which can also act as a speaker for chat the items for Xbox One seem to only be getting better. While not a deal break for some, it does put people in a better position in not having to get an extra if they will need to be in the market for one.
Taken from Xbox’s website
“The chat on Xbox One offers 3x the sampling rate of the Xbox 360. The quality of the Xbox One Chat Headset speaker and microphone have been upgraded to take advantage of the much improved audio quality. It’s also super lightweight-only 44g-with a padded earpiece that can be worn on either your left or right ear, and a bendable, rotating mic boom. You can control mute and volume without taking your hands off the controller.”