Just came back from a meeting with a very very senior staff from M$, who is he and what position I cannot say, but he's one of the decision maker lor.
here's what I manage to dig out from him. 

No official launching of Xbox360 this year.  Official launching will be in year 2008, Q3.



anyway, here's another news, which maybe some of you know of it already:
M$ already finished developed an internet browser for X360 long long time ago, but don't want to release it yet.  Why? bcos they fear history will repeat itself again, which history? something to do with IE and netscape lor