Never on 23 December 2014
The premature jump to VR could damage the idea in a lot of people minds. For vr we should be aiming for 1080p each eye at a solid 60fps as a utterly bare minimum.
Nintendo will be the first of the three able to release a console with sufficient power for quality VR as the Wii U will likely be replaced soonest.
I'd imagine they're going to wait and see how VR takes off or plan some AR device to further distinguish themselves.
I don't think people should read to much into Miyamoto's comments. They aren't going to go nuts over the tech until they have an announced device on the way to market.
