web_assist_mail,
See my earlier post: showthread.php?t=3179
In that, Eric kindly showed the path of the "source" files of the extension - which I have confirmed that you can take the latest build of FCKeditor and overwrite those files and then your extension will deploy the latest version of FCKeditor.
It seriously takes 30 seconds to do and your done... and while WA probably could update to the latest release the same way and roll out a dot release of the extension, you have to remember that extensive testing has to be done to insure that it will work under all environments. But so far, I can tell you that I have had no problems... just follow the link and you'll be good to go.
Cheers,
Brian