Right now there hasn’t been any news and with Sega’s restructuring there’s no knowing when they’re going to make an announcement. We did get Yakuza 1 – 4 and people thought after 2’s sales 3 would never see release!
Hopefully now that Anarchy Reigns has shipped Sega will be looking for another Japanese developed game to release next. With Yakuza 5 getting perfect scores in Japan and the hype level high within the fan community I’m hopeful we’ll hear an announcement soon and with any luck something playable at E3!
Try not to lose heart and be patient. Send @SEGA a tweet and let them know you want to see it so they know there is still a fan base.