ntel plans to release two new quad cores, Q9650 and Q9400 in Q3 '08 at $530 and $266 respectively. As such, Q9550 pricing will be lowered from $530 to $316 and Q6600 will be further lowered from $224 to $203. Intel also plans to release two new Core 2 Duo, E8600 and E7300 in Q3 at $ 266 and $ 133 respectively. By then, E8500 price will be cut from $ 266 to $ 183, E8400 from $ 183 to $ 163 and E7200 from $ 133 to $ 113.
VR-Zone : Technology Beats - Intel Upcoming Desktop CPU Price Cut
And this was confirmed by another source
Intel to update desktop CPU lines in 3Q08
Note: E7xxx have 1066MHz FSB, not 800 as the chart says