Release Date for Halo2?????

Does anyone know when Halo 2 is going to come out? When it does im so going to buy it I have read some many things summited by Microsoft. It sounds like its going to be 10 times better then Halo.

by the way anyone have Baulders Gate Dark Alliance 2 i just bought it and its so fricken awesome. I recommend to all ppl that like playing Diablo 2 for Pc.

All I know is that it is supposed to be in the Fall.