Well, I was excited up until the "Wii" part.

Nevertheless, Ubisoft is bringing a brand new Teenage Mutant Ninja Turtles game to Nintendo's white waggle box, a 2.5D fighter with a variety of modes and an online function which is claimed to beat out Super Smash Bros. Brawl's. 

Here are the details that have been shed so far:

-published by Ubisoft
-official development started Jan. 2008
-concept started Oct. 2007
-to be released in Sept. 2009
-2.5D Fighter
-Interactive Stages
-4 player versus
-Story Mode
-Battle Royal
-Tournament
-Winner Stays
-Loser Stays
-Practice
-Unlockable Characters
-Unlockable Stages
-Online aspects said to be better than Brawl implementation
-Each character is color coded with glowing effect to make 4-player battles easy to follow

In addition, the game is said to tie in with no specific part of the Turtles license, meaning it's not entirely based on any of the movies or cartoon shows. One of the game's producers sees this as an extra challenge, claiming that "for this game to succeed on its own it needs to be a great game.”

New Turtles game on the Wii. There you go.