TotallyMax already answered this correctly on another thread. It will be normal that some time lag will exist between Kubuntu and LMCE release, cause many times it's not just a matter of recompile, but also some new features, bug hunting etc....
But AFAIK, there will be simple procedure (or even automatic way) to upgrade (at least LMCE part will be) - not sure about Kubuntu... Right now LMCE is in very early stage, where source code repository is about to be setup, so time lag will be a bit longer. Guys are working hard on this one...
Have patience and contribute whereever you can...
Thanks in advance,
Thank you for the info Bulek! Perhaps you should paste in the link here to where it was proper addressed elsewhere.. so others can find such as well. (The less duplication we have the better right?)