Rather than being developed by Namco, like Ridge Racer 3D for the 3DS, this one is being handled by Bugbear Entertainment. You may or may not know them for the FlatOut series, racers with a heavy focus on vehicle destruction (and human ejection). Whereas the Ridge Racer series typically rewards you with usable boosts for drifting, drafting, and passing without hitting barriers or other racers, Unbounded will mix things up by "adding a punishing dose of destruction". The trailer says to expect it in 2012.
The FlatOut series was fairly well liked by those seeking some destructive racing, and it seems like Unbounded will follow that formula, maybe with a bit more class. I like my racers arcadey, so I'll keep an eye on this.
Source of quote here