Though Koei is still supporting GameCube, their recent announcements regarding specific franchises turned out to be a hoax.
Taking a break from their very crowded game-playing and updating schedule, IGN apparently decided to start checking the source code from all sorts of random websites. Their exhaustive investigative efforts turned up a real gem of a find: Koei's website was recently hacked by the devishly "clever" CyberCrud@hotmail.com, who we kindly ask you to NOT email with various curses and spittle.
Please note that Koei's confirmed GameCube support, which took place at a recent financial meeting, still holds, at least until Fran reveals that all reports of it were actually written by a non-existent movie critic. That is all.