2018 100D Got my HW3 upgrade about a month ago.
On my model, update notes indicate 3rd party chargers now displayed, Bluetooth improvement and voice command improvement. No reference to change in regen or range change. For me, the BT improvement is a great update alone. Having the car take control of BT only when I'm inside and ready to drive makes much more sense. I was getting so tired of the car hijacking my BT just because I walked by with my keys in my pocket....