DS Games come to the Wii U Virtual Console! It was revealed on Nintendo Japan's site via NintendoLife. The only picture shows the game Brain Age, "Dr. Kawashima's Brain Training: How Old Is Your Brain?" for Pal regions, where the GamePad screen is divided vertically to emulate the DS...
So, it works similar to Final Fantasy Crystal Cronicles Echos of Time but I wonder if we will be able to use both screens...