re: motor whine - it's also possibly that different people are sensitive to different frequencies. It's possible there is a frequency in the older models that is gone entirely, but the high frequency inverter noise I still hear isn't the one that people are discussing. I've actually also heard people complaining about what I'm pretty sure is the pedestrian warning sound as a motor whine.
re: improved mounts - yes, there was an official list of items given the press & studios and this was on it, along with heat pumps for non-GT, and some of the others.
Things like the revised PureLuxe interior were not on it, though. So those were a surprise.