Microsoft did not talk about its motion-sensing Xbox peripheral Kinect during the company'sand offered the camera as an optional add-on. Greenberg stressed that consumers having a choice is an important part of the overall Xbox One strategy.

"We really want Kinect to be a choice for customers. For me, I love it; I turn my Xbox One with Kinect; I use it for entertainment; I use it to do screenshots and all that," he said. "I like to be able to have my hands on the controller and use voice commands. But, frankly, a lot of people also want a better value and don't want to have to pay for it. So we're not going to force people to do that. We give people the choice."

You can watch our full interview with Greenberg below.