Microsoft is investigating ways in which it can modify the existing Xbox 360 controller to enable more precise control.

xbox360 controller - Microsoft considering modified Xbox...

Robert S. Walker, Microsoft product unit manger, hardware, has revealed that the company is currently looking into ways to fine tune the Xbox 360 controller - specifically the right analogue stick.

Microsoft wants to redesign the stick to better suit genres such as the FPS, where precise movement is a necessity. Whether or not a new controller will see the light of day is still very much uncertain, but should it make it to retail then it would be released as an optional peripheral, and would not replace the current controller.