It has been a long road for Netburst technology, and it has been one with highs and lows. Introduction of the first Pentium 4 on the Willamette core was plagued with heat and performance issues. Northwood's introduction was the first Pentium 4 core to actually gain a name for cool operating temperature, high speeds and introduction of SMP in Hyper Threaded CPU's. Since the death of the Northwood core, Intel has had nothing but troubles. Prescott introduced Intel to the world of voltage leakage and higher operating temps and clock limitations.
Dual Core was the only way Intel could salvage the Netburst system, and it has done a reasonably good job in order to put the Pentium D and Pentium Extreme Edition CPU's on the map. While having two high speed clocks on one small package, Intel really needs to abandon the FSB connection between the two CPUs for core to core communication, as AMD has already shown that there is another much better way to do things.
The latest instalment to Intel's Dual Core had certainly gained a few extra FPS in gaming, but its real strength is its pure number crunching and encoding abilities, feeding those long pipelines with straight forward numbers without stalls does give the Netburst architecture a one up.
The Intel 975X chipset is simply an upgrade to the I955 with the ability to run the new Extreme Edition CPU's along with the current Pentium 4 and Pentium D lines. Now all we need is more ATI Crossfire cards to keep the multiple graphics technology alive, and also hope Intel gets nVidia SLI approval but we might be waiting sometime for that to happen.