We have the Mario Sunshine Box Art(?). Also, we may have got the exact European release date(?).

Play.com, an online store, claims that Super Mario Sunshine is due for release on 27/09/2002 in Europe. We don't know if they are a reliable source, so it may not be true.

They have also posted a Box Art, which they claim is to be of the upcoming Mario game. Whether is is the real one is up to you to decide... :)