InsideHW.com has posted an article about AMD K10 Architecture

A few months ago, the American company Advanced Micro Devices - AMD, as the second biggest manufacturer in the processor market, launched the new K10 microarchitecture onto the market, in the form of a server solution codenamed Barcelona. Barcelona is the new Opteron which brings many novelties in the fields of virtualization, multi-socket scaling, as well as many improvements in multithread software synchronization. As far as desktop computers are concerned, the K10 architecture also brings along an entirely new platform, which should unify all vital system components under a single brand - Spider.

AMD K10 Architecture Review