daily/weekly updates

I am currently using netrunner 14.2. I enjoy it and it works well with my system. If something happens to my system and I need to install 14.2 again. With all the update that are coming in to my system, I would think that there would be a 14.2 v4 or something along those lines that I would have to start over. If i am wrong in thinking that then could someone please let me know. I also know that 14.2 to slowly coming to the end of its life.
Thanks Stan.