Joel Oleson has just released a bunch of links to the freshly released capacity planning articles for MOSS 2007/WSS V3.  These collection of articles are definitely going to fill a nice gap that will help us IT Pros to plan for MOSS 2007/WSS V3 implementations.

From Joel’s Blog Post:

" Within these docs you’ll find data on servers, server topologies, system sizing, figuring out requests per second, understanding performance characteristics and guidance around features, such as folders vs. no folders. 

Please use the mechanism to provide feedback.  The perf team needs to know if this meets your needs.  I as well and interested in what your looking for beyond what these papers provide"