We were surprised to learn that despite the rumors going around, AMD's eight-core CPU is actually a native one. AMD can do native octa-core just as well as Intel can with its Nehalem, and the codename for this eight-core monster is Montreal. This comes from a highly ranked source at AMD.
So, Montreal is not just two Shanghai quad-cores stitched together, it's a native octa-core 45nm part. This makes sense for servers initially and eventually it will also launch for the ultra high-end gaming market.
Of course, this all happens in 2009.