i notice when i was in the synaptic manage the other day that the new release KDE 4 was there can i upgrade from synaptic or do i need to download the files from a different source? currently running kubuntu 7.10 gusty and haven't seened any kind of updates come through that gave me the option to upgrade to that distro. 
You could, but I would strongly recommend that you don't. KDE 4 is not a very functional desktop at this point in time, you would probably be better off sticking with KDE 3 for the time being.