Thanks.
The on-line catalog certainly could be out of date. However, if Kimber was now putting stainless barrels in nearly all their guns, I'd think that would be a major marketing point and I haven't seen it. While I don't follow Kimber very closely, I am primarily a 1911 guy and their ads are hard to miss so I have some idea of what they are doing.
The "in the white" carbon steel barrels, while probably contributing to Kimber's good accuracy reputation, have been a knock on Kimber for a very long time. They may have changed, and I'd think that would be a good move on their part.