The Legend of Zelda series creator Shigeru Miyamoto confirmed a downloadable version of The Legend of Zelda: Four Swords for DSi.
As part of the franchise's 25th Anniversary celebrations Nintendo will be releasing a version of the four player co-operative game as a free download this September. Presumably it'll also be available on the 3DS DSiWare section as well.
Nintendo didn't confirm whether the game would be online-enabled or restricted purely to local offline.
Additional details will become available shortly.