Buzzi on 23 January 2010
2013-2014, considering the work on the new Zelda started even before TP was released (early 2006) I think they can start working on it this year...and every Zelda has 2-4 years of development (4 for TP, 4 for Zelda Wii, 2 for portable Zelda games) so 2014 sounds right...