According to an article on Nintendo's company website, the Legend of Zelda Phantom Hourglass will be released in the US on October 1, 2007. According to the article:
"What do you get when you combine the world's best-selling video game system, the Nintendo DS, with one of Nintendo's best-loved franchises, Zelda? An epic new adventure that satisfies longtime fans but draws in new players with intuitive touch-screen controls. Launching Oct. 1, The Legend of Zelda: Phantom Hourglass, complete with crisp 3-D cartoon graphics and multiplayer battles over Nintendo Wi-Fi Connection, marks the debut of the franchise on Nintendo DS."
This long awaited final date is a very refreshing site. We will be switching the Phantom Hourglass section over to production mode within the next few days, which means links, or lack therof, will appear for you to click out of your personal ambition for amusement or information :). Thanks to Dakare for pointing out the article to Zelda Sages.