Andriasang and hilariously mangled by Google) that the developers had already begun constructing a demo in earnest. Hashimoto hopes to provide a snippet of content not merely taken out of the full game, but devised to entice even existing owners.
Said owners will mainly start appearing in Japan this October, when the game is scheduled to launch on Xbox 360 and PlayStation 3 -- well before the North American release in January 2010. You'll probably want to read our hands-on impressions before you get your hand on it.
Update: Sega of America is unable to confirm plans for a North American demo at this point.