I just took delivery of a 2021 Model X, vin 308XXX, and I was surprised to see that the EPA Monroney Sticker lists the range at 371 miles. EPA does not have the 2021 Model X listed on fueleconomy.gov. My car is equipped with the new version H battery. I wonder if the 371 mile rating is due to a chemistry change in the 18650's cells from Japan. I haven't charged to 100%, but when I extrapolate my current state of charge % to miles, it should give 351 miles at 100%. I'm hoping that a future software update will unlock additional range. I plan to post my thoughts on moving from a 2017 X100D to the 2021 X Long Range Plus in a week or two after I have had some more time with the car. Below is the Monroney Sticker comparing my two vehicles.