That's right! http://www.Nintendo.com/43434-34 (Or you can go from the front page.)
Nintendo of America president Reggie Fils-Aime toldForbes the exciting news about the future of the Wii U.
"The interesting thing there is, 4 million units is a milestone when you look at today's market that includes tablets and smartphones. The competition will hit a wall in production and demand just like we did when we launched the Wii U a year ago. So the truth is to be honest that we are ahead of the game and have the advantage." Fils-Aime said. "So, in the end, it's our responsibility to show consumers how much fun you can have, because in the end, this is an entertainment business, and we think we've got stellar entertainment to make the consumer smile."
So basically the Playstation 4 and Xbox One will be having similar issues reaching that 4 million unit number. Because Phones and other mobile devices are killing console gaming.