There's really too much news about this, I couldn't begin to list them all, but off the top of my head I could say that:
*There are new fruits
*The island returns, along with Tortimer, you'll be able to play minigames on that island with your friends, or solo(?)
*Christmas is celebrated differently this time around, Jingle will hand you a bag of items, which you'll have to hand out to all your villagers. (throughout the month of December they'll drop hints as to what they want so you won't have to deal with randomly handing out presents and hoping it's the right one.)
There's definitely more, but I can't think of it atm.
At least I know you guys will play the game with me! :D
I think I'll get it release day, if I still have enough money after buying Fire Emblem: Awakening.
And for most anticipated, I'm also quite excited for Luigi's Mansion. Hopefully they don't release around the same time, because I still need money for Pikmin 3 down the road.
Honestly, hoping for a summer release. I'd have a lot more time to play it than without school and stuff. Plus, I might have the money I need for it by then.