That's it Matt.
Manufacturers don't always continue to update older models indefnitely (and this camera was introduced in February 2002). Some cameras may never get a firmware update (unless there is a problem of some type).
You can check to see when they have new firmware for Konica-Minolta cameras at this link (they normally post the updates on their web site in Japan first). Select a model and press the button to the right of it and you'll see the latest updates.