1500cc? doubt that very much.. not for the 2000.. why would they make a 1300cc bike one year and upgrade the next? maybe i'm wrong but i doubt that the 1500cc is coming shortly, and as for the zx-12, there is no proof about this machine, and i also doubt that it will come close to beating the busa, i'm sorry to say, not because i'm a suzuki lover but because of all the gossip that has been going around... it's just not gonna happen 

