The least known MMO for developer/publisher NCsoft, Steel Dog, is also getting an official announcement at G★2009 game convention. Compared to Aion and Blade & Soul, this game seems not to be garnering much attention. Its a room-based MMO, and plays pretty much like Twisted Metal. You choose a car, go into rooms with different modes, crash and smash opponents while earning enough to upgrade your vehicle.
Here’s 2 videos of the game taken over the past year. I’m sure some things have changed since then maybe the UI, but nothing is confirmed yet till the G★ convention.