Good news for the futurama fans! The game will still be released on the GameCube, eventhough the series have been cancelled. We have the proof right here in an interview with the Futurama Video Game producer Anders Hejdenberg.

Q: Sadly, Futurama has been cancelled. Will this affect the games at all?
A: No, not in the slightest!

Also interesting to note is that there will not be a GBA Futurama game, unlike a lot of people thought.

Q: There were rumors that there is going to be a GameBoy Advanced Futurama video game, is this true? And if so, what will the title be?
A: This is not true. There will be no GBA version of the game.

Q: Also, do you know what the title of the PS2/X-box/GameCube Futurama video game will be yet?
A: There is no official title for the game at this point.

There you have it folks! The game is still on it's way to the GameCube!

Source: http://www.gotfuturama.com/