WAG, but my fearless prediction is that they'll run the 1250 for AT LEAST three model years ('07-'08-'09) with no changes except the colour choices. Why would they change a bike that's selling so well and (so far) hasn't experienced any problems ??
.....although mounting the regulator/rectifier on top of the bottom end castings will eventually come back to haunt them, IMO. That sucker WILL get pretty warm in stop and go traffic with temps that you US guys see in summer. For some reason Japanese engineers don't seem to understand how hot it DOES get in downtown Dallas/Phoenix/Atlanta etc etc under such riding conditions.
Well, we'll see how it shakes out after 2 or 3 years of such torture....