“I have had the extreme pleasure over the last 14 years to work on the greatest product with the greatest team and for the greatest community,” said Whitten. “Xbox is so special because of the amazing team I’ve had the opportunity to work with and because our fans are the most incredible fans on the planet. It has been the highlight of my career to work on a product so loved. It’s incredibly tough to leave but I am confident the best days are ahead for Xbox fans, in the capable hands of a very talented team.”
The remainder of what was Whitten's team will now report to Terry Myerson, an Executive VP that "oversees the teams building the software platform and experiences for Windows, Windows Phone, and Xbox."
You can read more on Whitten and his departure at the Xbox Wire.