These things are not confirmed!!!
Zelda: A Link to the Past was one of the best 2D Zelda games and now Nintendo hints too a remake in 3D for Nintendo 3DS: “Well actually, even Mr. Miyamoto himself has been talking recently about going back to the 2D Zelda games,” he said, “in particular the ones that were designed with multiple levels to the world like A Link to the Past, and taking those 2D graphics and recreating them in 3D so that you could get a sense for the depth of those worlds. That’s something that might be interesting to do, so I would say there might be a possibility of something like that in the future.”

More news, Hideki Konno told in the Nintendo Power too have plans for a Mario Kart for Wii U: “I can’t get into the specifics, but I do want to create a new and enjoyable Mario Kart that uses the unique functions of the Wii U,” he said. “Anything beyond that I have to keep secret. Please bear with me for now!”
Also, “Knowing that Retro Studios had a strong track record and a long history of creating quality products with Nintendo, I asked them to collaborate with us on aspects like course and character design,” he said. “The course designers and artists at both EAD and Retro Studios worked closely together to create what I consider to be very prolific and high-quality work.”