yeah, the Q6600 is the mac daddy of cpus.
the Q9400 will be an 8x333 cpu with 6mb of ram, basically a Q9300 with an extra .5 multi. Not that this is any big secret, but my guess is that they'll keep building the same mix of 45nm and 65nm cpus, they'll just bump up the multi by .5 on all the 45's and lock the multi at 9 on the 65's. so Q9300 goes from 7.5 multi and becomes Q9400 with 8.0 multi. Q9450 with 8.0 becomes the new Q9550 with 8.5 multi, etc. Someone over at intel must have had an "AHA" moment and realized that they needed to do something to keep demand robust as they ramped up 45nm production in Q3. Also, I don't think that ANYBODY has seen a Q9300 that wouldn't do an extra 166 mhz, ditto Q9450 and Q9550, so intel isn't hurting themselves with this scheme, either. maybe this bodes well for amd clocks.