This April Fools joke comes from cubed3.com:

Whilst there was a lot of pre-release hype for the new Nintendo 3DS unit, and the response from early adopters has indeed been extremely positive, the system has not quite penetrated the European market as well as expected, missing initial sales projections. It is hoped that between the new range of colours arriving on 1st April, 2011, and the special commemorative golden 3DS to celebrate the 25th Anniversary of The Legend of Zelda, this year will see 3DS surpass regular Nintendo DS sales. You would be an April Fool to miss out!