this processor line-up is simlpy awesome, I just wonder why there is no 2,4/2.0ghz 1600mhz fsb part. Those high fsb parts completely rape k10 in everything (so why not release more of them?)

4GHz Yorkfield Intel displayed were only phase change possible and even then not stable about two weeks back. So not much to go off.
I am sure as hell there were already some AC/WC 4ghz yorkfields.. I don't expect the air overclock to be lower than current g0, it was already shown that they perform great under LN2, maybe even better than current core 2 duo.