http://www.gamers.com/news/1340456
I wasn't the biggest fan of Rogue Leader or whatever it was called, and personally I still don't see what people find in the game, but eh.
Anyhow, this is only Factor 5's second game on the GameCube, and it's a sequel to their first game as well as one of the few games they made on the n64. I'm sure the fans of the game will be a little thrilled at this, but I'm sure Factor 5 has enough talent and skills to make games in another genre or series.