The U.S. version will be called Animal Crossing instead of Animal Forest.  Also, the game will come with a memory card.  Also, the e-card reader will be released in the States so players can swipe Animal Crossing e-cards so you can get a password to give to a NPC which will earn you a prize in the game.
Sounds neat.  I don't know about the new name though...  But I'll probably get used to it...
http://gamespot.com/gamespot/stories...859687,00.html