Truama Center: New Blood will be release on November 20th, 2007.
Here is the Game Intro Trailer.
http://www.youtube.com/watch?v=M1d_ct6nI_8
I really liked Truama Center: Second Opinion and this one is especially made for the Wii. So I will definitly buy this one.
This game will include Full Voice Actors, Co-op, and Online wifi Leader boards.
Here is the Official TCNB Web Site for pictures and other great videos.
http://www.atlus.com/tcnb/
I'm getting it on Christmas. I have both previous Trauma Center games and the Co-op sounds promising.