I e-mailed zipp the other day asking whether they were going to certify the new Swiss stop "Black Prince" pads for use with my tub's (FC 404's) and they responded stating that the testing crew weren't going to get to it till May/June!! I use Swiss stop Yellow Kings and they work mint!
Seeing as I am the testing crew, allow me to chime in.
As I told Denham when he relayed your question, lab testing is not yet underway (we have a rather large queue of items that we've deemed higher priority and have a finite quantity of machines and manpower). That will be completed by the end of the year, but the field testing is the more time-consuming facet of the "recommended pad" process. I'm sorry the timing is not to your liking.
As Charles and others mentioned, it's imperative to use appropriate pad/rim combinations. Those manufacturers that actually test the product put forth recommendations based on safety and performance, and often this affects warranty validity. The best pad for our rims is not necessarily the right pad for a Corima, Reynolds, etc. rim, and vice versa, despite what you may see from the occasional forum post.
From our perspective, recommendations are based on the performance in wet and dry conditions: power, modulation, heat management, pad wear, and rim wear. Obviously these are a lot of factors to consider, particularly when you take into account rider preference (e.g., some riders like the grab of the yellow pads, many do not), so I urge people to heed their rim manufacturer's suggestions over what they might find on a forum.
tetonrider, I also like the old black carbon pads. Wear isn't much of an issue in the midwest, and brakes only slow you down anyways.