The rumours are that Intel is indeed launching the Kentsfield in the fourth quarter of this year. Details are expected to immerge at the end of this month at IDF.
In this humble idiot's opinion, quad core is a good thing. While it's a bit of a trick for Intel to suggest that a quad core CPU will offer better performance than a dual core, there would certainly be no situation where a user has to worry about execution resources. Even if it would really be no faster at any given task, burning a DVD, encoding media and playing a SMP optimised game all at the same time is no sweat when you have 4 execution engines.
eWeek reports.