In addition to the 3DS re-release of Ocarina of Time in June, and the release of Skyward Sword later in the year, Nintendo is planning yet more Zelda for 2011.
Miyamoto stated in a recent interview that the company plans to celebrate Link’s 25th anniversary in a fashion similar to that of Mario’s birthday last year. Whether that means another collector’s edition of classic games or other merchandise is unclear.
Another Zelda title that may be coming back, although probably not this year, is Link to the Past. Shiggy stated in another interview that he’d be interested in pulling apart the layers of the game to create a 3D effect for 3DS. Such a title would presumably come out as a downloadable title.