I don't think any company, be it Nintendo, Sony, or MS is ballsy enough to launch any console without a traditional interface. It's like voice recognition. Sure, it's neat, but would you want to replace a mouse/keyboard with "Computer, open My Documents, please."

In the end, I don't see this changing much. A new console or a peripheral, it'll have it's uses but I highly doubt we'll end up becoming the old generation saying things like, "These whippersnappers today don't even know what it's like to hold a controller!"