There has been some good articles on Anandtech lately. I don't know how many others read it but I thought I'd post them.

Here is the first one that talks about the upcoming release of the Prescott, Grantsdale, and how they are planning on phasing out AGP slots. http://www.anandtech.com/showdoc.html?i=1826

And here is the article on the purposed replacement of PCI.
http://www.anandtech.com/systems/showdoc.html?i=1830

Looks like we are in store for some intresting (but good) changes soon.