The iPhone Will Have 3 Cores

ARM's CEO(the same company that made the processor for the Apple Newton) has just confirmed that they have made the processors for the iPhone. Also that there will be 3 cores! How long did they say the battery will last...? Actually these processors apparently have an extremely good "power to power ratio", in that the power it consumes is very little for the speed in which it preforms. So what do you call it?...Tri-Core...Core Trio...