Sony Japan has just launched a teaser site called "3D" for what seems like another entry in the Yuusha no Kuse Namaikida series (the first game was released as Holy Invasion of Privacy, Badman! outside Japan) of insanely quirky dungeon management games.
At first glance, the site doesn't really scream "Namaikida", but those who've played the games before will recognize the sound that plays when you click the little pig-like graphic on the bottom-right corner (it's Shota's death voice, by the way).
Clicking on the graphic also leads to a site that contains links to cellular slime physiology, food chains, and life cycles -- important concepts found in the past two Namaikida games.
The teaser site shows a September 17 date, which is probably for the official announcement. We're likely to hear more details about it at TGS on the 24th.