The Ryu Ga Gotoku official site has just been updated with a new flash construction message.
The animation gives a brief history of the Yakuza series and finishes with a date of when can expect more info about Yakuza 5!
Usually Famitsu announces upcoming Yakuza titles with the latest issue expected to release on the same day as the new site launch.
24/05/2012. Mark your calendars!