Found this while browsing Wikipedia:
Likely dates for the new intels to see market:
June 26 - Woodcrest (Servers)
July 23 - Conroe (PCs)
August - Merom (Laptops)
They're apparantly doing some quad and 8 core processors too, not sure that will really boost performance as much as dual-cores did but should be interesting.
AMD prices are likely to drop then as well.