An anonymous Nintendo representative apparently said that the real functionality will reside in the Wii being able to download DS titles to be played on Wii. "Users can download games to play on Wii," the nameless NIntendo rep said. This rep also supposedly went on to say "and, in the future, the Nintendo DS will be able to receive demo versions of some DS games from Wii, but not the entire game. The demo will be erased once the Nintendo DS is turned off."
We're wondering at the possible alterations our DS games would need to go through in order to be played on Wii. How about you?