Can anyone shed any light on upgrades made since approx. vin 93,000? I've been holding out on making a purchase until the "X" announcement primarily in expectation of an upgraded AP sensor suite, but @elonmusk tweeted three days ago that the S and X are the "same," so I'm ready to pull the trigger on a model which s a few months old. Just checking to see if there are any new features I may have missed. Thanks!