In a press conference today, Tesla CEO Elon Musk announced two performance upgrades and a new version of the Model S. Tesla amps up the P85D’s acceleration from Insane to Ludicrous mode, offers a battery pack upgrade from 85 kilowatt-hours to 90 kilowatt-hours, and makes a rear-wheel-drive Model S 70 available for $70,000.

Source: www.automotiveitnews.org

Taking OTA to the extreme, and competing with the typical aftermarket approach, you can now upgrade your Tesla at the cost of some whole cars. I guess its only 5-10% of the original price so many owners will opt-in. Of course the new hardware is not delivered over the air, you have to visit your Tesla dealer.