It wasn't on their list for remaining 2009 releases, so I think they are waiting on bringing it over to give Mario & Luigi 3 and Zelda: Spirit Tracks time on the shelf to sell.
The way they are spacing their releases, my best guess would be we could see it March/April 2010, unless they decide to wait and put it out in the summertime like they did Starfy this year, to break up the summer drought of gaming.