YB, Re: I might be wrong but I heard that IBM is already playing with 65 nm now.
Of course they are. AMD is actually playing with 25-30nm right now, according to their announcement of 10nm transistor gates. However, AMD's technology that they are "playing with" won't be in production until 2009 at the earliest. I am fairly certain that IBM is playing with 65nm. Whether they have devices or not, it is very doubtful. Like I said, the tools and machinery required to ramp on 65nm won't be available until 2005 at the earliest. You can verify this at several places around the Internet.