When Microsoft executives call Lost Odyssey epic, they mean it.  At TGS, Hironobu Sakaguchi announced that his upcoming Xbox 360-exclusive RPG will span four discs, at a game length of forty to fifty hours.  In addition, the game will ship with multiple language options, so we know that the insane amount of disc space is going to good use.  Gamers will be dreaming of Xbox-branded multi-disc changers when the game launches in Japan later this year, and in the rest of the world in 2008.