There wouldn't be any real need to split the "K5" prefix - it would simply stay there, meaning "any device with FW 5.x". That would also drastically reduce the need to re-label threads. If one finds that some thread really only concerns a particular device, such re-labeling could be done when that is noticed.
I do agree with eureka though. Amazon has a terrible policy for naming their devices, so it could well be that they decide to launch a "PW2" in the future. I think they currently call them the "new" and "previous" PW
So shall we go for PW2012 and PW2013 or so? The only concern I have is that tags might get overly long and complicated at some point in time... Dunno.
