Sega is set to reveal a new game in Japanese mag Famitsu this Thursday, November 22. That's according to a mysterious teaser sitethat went online overnight, featuring cityscape imagery and a sky full of winged beasts.The teaser site also makes reference to Tokyo in its URL, and 'AD 2021' in its title. Speculation has linked the reveal to 2009 Nintendo DS RPG, 7th Dragon, which saw a PSP sequel last year called 7th Dragon 2020.