Well, if you listened to Reggie and the gang, it will definitely be online and it comes with a wheel (which I hope can be tacked down to a table or something). They also mentioned about more players - Also, some of the online games will not require friend codes. Which games? I don't know, because I am hung over and in need of coffee.
I don't know which 'teams' are involved, but I hope it won't be as cheap as Double Dash (blue shells, enemies ganging up on you, blue sparks).