KCNC has revealed in its new electronic catalogue a 12-speed road system, as well as an 11-speed mountain bike kit.
No release date has been specified within the pdf and given that some products appear to be no more than drawings at this stage, it seems unlikely that this will be a 2012 model year product, more an idea for potential production in the near future.
Having said that, KCNC already manufactures a superlight 11-speed cassette for mountain biking and by the looks of things, already has a finished model of a titanium road cassette in 12-speed.
Clee Cycles distributes the KCNC brand in the UK.