Shooting master Cave opened a teaser site today for a mysterious new project. Access the site here.
The page title says "A new proposal from Cave." The page appears to be promising some sort of announcement on 11.11.11, which would make a reveal in this week's batch of magazines likely.
Although Cave is known widely for their shooters, they dabble in other genres as well, including social games and online titles. Development head Makoto Asada is readying his first visual novel style adventure game, Instant Brain, for Xbox 360 release this week.