As for the 8-core setup by Intel, I've read it somewhere. But here's what I found out about it. This isn't the original website I read up on, but it's still pretty legit. Oh, get it? Legit, legit review website? Oh man...
Based on the Intel Penryn core:
Legit Reviews - Intel Shows Off 8-Core 45nm Penryn Benchmarks - Intel Deals Another Blow - Is It Deadly?
Look at the pict with the 8-cores running!! Wow.
OMG, Intel is planning on a 2008 release of a new microarchitecture, codenamed Nehalem using the 45 nm process.
For 2010 (or by the end of 2009) Intel plans to release a new CPU core based on Nehalem microarchitecture but manufactured using the 32 nm process. This new core is codenamed Westmere.
Also in 2010 Intel will release a new microarchitecture, codenamed Gesher. The first CPUs using this microarchitecture will be manufactured under 32 nm process. They will feature the new SSE instruction set, called SSE4 (that will bring 47 new SSE instructions to the CPU), larger caches, and other good stuff yet unknown.
Looks like a new release every two years...
22 nm manufacturing process will be in the works by 2011.
How do they come up with all these strange names?!?! Well, looks interesting from looking at the Intel Roadmap.