A pending stock trade means that Nintendo cannot legally announce any new information at GDC 2007.
Although Nintendo is set to have a big presence at the 2007 Game Developers Conference next week, Chris Kohler of Wired.com's Game|Life blog has learned that the company will be restricted to talking about the past. Nintendo is set for a major stock trading event in early March, and Japan's business laws say that Nintendo can't talk about its upcoming games or other plans until that deal is complete.
Whether this policy applies only to interviews and conference sessions or will also include Shigeru Miyamoto's keynote speech is currently unknown. NWR is following this story and will bring updates as they become available.