This free DLC was supposed to hit about four days ago, but for whatever reason, it didn't make it out of the online gates until today. Personally, I assumed it was going to be cut altogether, because I'm used to Nintendo saying they are going to give me something, then later changing their minds. City Folk DLC has been pretty reliable thus far, but I'm going to stay bitter until I get the e-reader Super Mario Advance 4 levels and the Punch-Out!!, Legend of Zelda, and Super Mario Bros NES games in the original Animal Crossing that I was promised years ago.
Anyway, if you have Animal Crossing: City Folk and a wireless Internet connection, you should take the time to grab this cute little reminder of how awesome Pikmin is. Like all City Folk DLC, the dolphin is totally free, and will only be available for about a week (unless Nintendo changes their mind about that too).