Following in the footsteps of when The Legend of Zelda: Phantom Hourglass was revealed at a previous Game Developers Conference, a new Zelda game has been announced/teased at this year's GDC.  Trading in his boat for a train, Link rides the rails in The Legend of Zelda: Spirit Tracks.  That's about all we know at this point, but the game is supposed to be available later this year.  I've certainly criticized Nintendo's embrace of the casual game market at the expense of core gamer titles, so let me take this moment to give the company a little praise for bringing a new Zelda title to the Nintendo DS.  Phantom Hourglass turned out to be a fun little adventure, so even if Spirit Tracks ends up being more of the same, I think I'll be happy.  I'd like to see the gameplay improved and refined, of course, but a solid Zelda game is still a solid Zelda game, and all of the speech trainers and cooking simulators in the world cannot change that.