I mentioned this yesterday, but heres an official press release.

 

The 2008 Game Developers Conference has honored Nintendo with a Game Developers Choice Award. The Legend of Zelda®: Phantom Hourglass for Nintendo DS™ won for Best Handheld Game of the Year. The game continues to enjoy strong momentum in the U.S., with more than 1.1 million copies sold since its Oct. 1, 2007, release.

Nintendo received nominations in three categories: Best Game of the Year (Super Mario Galaxy™), Best Handheld Game of the Year (The Legend of Zelda: Phantom Hourglass), and Best Game Design (Super Mario Galaxy). The awards were presented during an annual ceremony the night of Feb. 20, 2008, at the Moscone Convention Center in San Francisco. The awards are among the highest honors in game development, acknowledging excellence in game creation.

Nintendo Press Release