I haven't really played any of the Zelda games, so I'll make sure to download this at some point tomorrow for my 3DS. If it's true that it is only a 4 day free trial of the game, I'll be a little bit disappointed, but not heartbroken, since I've got a few other games occupying my time right now anyway.
Hopefully we see Nintendo do more stuff like this in the future though, especially with some of those games in the ambassador program that us late starters didn't get a chance to have.