While we just recently by some kind of miracle recieved Yakuza 3 on PS3 from Sega. Japan is currently on their 6th game in the francise and the 5th of the main series. There is a teaser site up teasing some sort of solid announcement for the actual game a little bit before TGS. I assume that it will also have some sort of presense at TGS as one of Sega’s most popular games in Japan.
You can check out the promo images after the jump.