Skies of Arcadia was cancelled for PS2 in favour of a great, more featured and "beefed-up" GameCube version.
The new GameCube version is going to be called Eternal Arcadia Legend and is apparently so far looking much like the Dreamcast Skies of Arcadia, although there is a new character called Piastol. She pilots a pirate ship.
I think the game is sounding like it is shaping up to be a cool RPG for GameCube. What do you think?