Yes, it was already pretty well understood that the new M3 motor design was superior to the S/X so it's not too surprising that they'd upgrade the entire lineup

Yes, it was already pretty well understood that the new M3 motor design was superior to the S/X so it's not too surprising that they'd upgrade the entire lineup to the new shiny. Especially if you consider the S/X are supposed to be at the top of the lineup.