Check out this new side by side comparison of the Xbox One controller and the Xbox 360 controller, and learn about the new features of the Xbox One controller.
This looks pretty interesting. It looks like Microsoft improved on the great design of the 360 controller by adding subtle changes instead of drastically changing it. The trigger motors sound great, and I think they will add a lot of immersion. The Xbox One controller looks like it would be great for PC gaming as well.
Update: Also here is a PlayStation 4 controller compared to the Xbox One.
Posted by George