I'd be very surprised if this is true. Adding a D pad and extra button at the last minute and redesigning the controller entirely feels a bit of a stretch. And it looks a bit strange having a dedicated "arm" just for a single button, especially if it's the start button (rather than a hypothetical "D" button.

Edit: I didn't realize there was an actual real photo of one linked as the post, rather than the blurry one in the description thingie. I don't know what to think.