sgolds
Yes I believe AMDs roadmap is indeed their best guess (although a tad on the optimistic side: It has a second generation 90nm process for end of 2005 on its map. (I read: 2006)
Now, a process node has to run at least two years to make money. 2006 + 2 = 2008. Sounds right to me, until then I would expect the transistor-geometries ready for volume production I assume are required to make 65nm manufacturable.
Anything else I'd like to see before I believe. It is possible anytime that you find gate oxides or modifications of current geometries to make it manufaturable earlier - but that i would consider a lucky strike which is nothing you can really predict, let alone put in on roadmap.
K.