MojoKid writes: Microsoft confirmed a development rumor that's been swirling around its next-generation console ever since it announced Kinect would become an optional add-on rather than a mandatory boat anchor. Lifting that requirement will give game developers 10 percent additional graphics power to play with and help close the gap between the Xbox One and PS4. The story kicked off when Xbox head Phil Spencer tweeted that June's Xbox One dev kit gave devs access to more GPU bandwidth. Further, another Microsoft representative then confirmed that the performance improvement coming in the next version of the Xbox SDK was the result of making Kinect an optional accessory. No matter how Microsoft may try to spin it, cancelling Kinect isn't just a matter of giving game developers freedom, it's a tacit admission that game developers have no significant projects in play that are expected to meaningfully tap Kinect to deliver a great game experience — and they need those GPU cycles back.