By: Justin Haywald UPDATE: We acquired an image of the non-final controller being handed out to Steam Dev Days attendees. It’s identical to the controller Valve demoed at CES. The area in the middle where the touchscreen would be is a grid of four buttons. As you can see from the mock-up controller, the design is still going through a pretty radical change. The original … Continue reading Valve replaces Steam Machine controller touchscreen with physical buttons