X-Out is working on a 3D version of Gravitron. (forum thread)

Mike Bithell (Visiting Day, Reunion) is currently developing Clockwork, a new steampunk adventure.

Buster (Iwanaga) is working on a new game.

MOFUYA will release Mobai Room 3 soon.

Takase might possibly be working on an update for Dot Fighters.

Deadheat is developing a new action game called Blastforce.

The Last Stand 2: Stand Laster has been in production for more than five months, and will be released sometime in April 2008. (The Last Stand)

A follow-up to Sonny is in the works. (announcement)