I did the software over the air update on my Model S 60D (produced Oct 2016) to 75D in summer of 2017 when Tesla reduced the price of the upgrade from $9000 to $2000. I just took my car in for its first annual service (just hit 12,000 miles) and in addition to changing out the badge the the service invoice also indicated (as a separate line item) they upgraded the firmware to upgrade the performance to 75D. The car is NOTICEABLY faster. Although I haven't measured it yet, I'm pretty sure it went from the approx 5.2 second 0-60 advertised with the 60D to the 4.2 second 0-60 that is now advertised with the new 75D's. So to answer the question of the other users here, if you have a software limited 60D you should get increased performance / acceleration (in addition to the range increase)....After the over the air update you will obviously realize the range increase. However, you may require a service at the dealer to get a firmware update before realizing the increased acceleration.