Carbon spoke nipples, carbon waterbottles, carbon eyeglasses, carbon grips, carbon saddlebags, carbon cables and housing, helmets with a full carbon shell, and especially carbon tires-rubber is so last century.

To be serious, I think the next advancements in frames and components will come from the use of composites besides carbon. Carbon fiber is only one branch of the composites family and other composite types will be found to perform better than carbon for some applications.