Nehalem is the codename for Intel's next generation Core microarchitecture--which has recently been given the official processor family name of "Core i7." Nehalem was one of the big topics of discussion at IDF--and not just because it represents the next generation of Intel's processors, but also because the clock is winding down quickly on when the chip will make its official, public debut. An official date has not been given yet, but Intel is promising that we'll see Nehalem systems for sale sometime in Q4 of this year.
Intel claims that Nehalem represents the biggest platform architecture change to date. This might be true, but it is not a grounds-up, completely new architecture design. We've got the full scoop from IDF right here...