I think what we're all trying to say is that to date, all US bikes have been identical 2012's. They're all essentially the same except that bikes ordered under the PDP system were $13,900 MSRP and bikes ordered after the PDP closed are $14,500 MSRP.
Now if your March 2012 bike is coming from a new production batch of some sort, then it is possible it might be some kind of changed spec, but we're heard nothing about Yamaha's plans going forward from the current batch (or even IF they are going to do a new batch), so hard to say. I'd be surprised if a bike with any changes is going to be around in March - more than likely it will be the same bike from the initial production run that occurred during summer 2011.
- Mark