It's called Crash Club, and you can sign up to play in the beta right now.
What is Crash Club? I've yet to check it out, but it's a game about crashing cars with an online component. According to the folks at Prettygreat, it's their most ambitious title to date.
Prettygreat is a studio headed up by Fruit Ninja creator Luke Muscat alongside other Halfbrick alumni like Phil Larsen and Hugh Walters. They previously release Slide The Shakes and Land Sliders — both of which were... pretty great.
Especially Slide The Shake which I found super addictive.
I expect Crash Club to hit that same level of quality. Can't wait to check it out.