I think this firware update that Dana is installing on resurrected machines deserves a thread of its own, expecially considering how much it's improved my satisfaction with highway driving. Looking in the diagnostics software, the only change seems to be an update in the Motor Controller software from REV 1017 (v 1.017) to REV 7-68.
My speedometer has always read a couple of kph high, so I'm actually now seeing 70 mph as my max speed. When I mention this to others, I'm surprised at the change in reaction. It's pretty remarkable how 62 mph has always implied underpowered and handicapped while 70 mph (or even 68 mph) seems ample for everyday use.
In practice, I find the extra speed absolutely essential for passing smartly and safely on roads with 55 or 60 mph posted speed limits. (It also makes it much easier to draft on the freeway, but we've already discussed the dangers of that in other threads.) The bike runs smoothly all the way up, and there's no sound or vibration that might indicate the motor or reduction gear is approaching its limits. Efficiency will certainly go down with the added wind resistance, but I find that I'm so infrequently using the "boost" that there's really no discernable impact on range.
Dana told me that the plan is that all new bikes from the factory will have this new firmware, but with the existing dealer network in such disarray it wasn't clear what opportunities current owners might have to receive the update. As far as I've seen, the only copy of the REV 7-68 MCR firmware in the field is on Dana's laptop, but I'm hoping that might not be true for long.