GamePro is reporting that George Harrison, Senior VP at Nintendo, says they're looking forward to offering "downloadable content, such as additional levels" with Zelda: Twilight Princess.
However, there are no current plans to offer a "post-release online component" and it doesn't look like there is anything in the works. According to Harrison, "I haven't heard of anything yet. I think everyone is still busy trying to make sure the game gets out correctly."
Now, all we can hope is that Zelda doesn't become the Wii's Oblivion ... or [fill in EA game here] with dubious downloadable content.