No, that is not to say Tesla owners which receive free supercharging are going to lose their supercharging rights. Elon Musk has put a deadline for potential owners to buy a Tesla and still receive the perk of free supercharging. The company's revised terms of access to its Supercharger network has mostly to do with phasing out of free unlimited Supercharging. The only exception was the opportunity for current owners to buy new cars with continued free Supercharger access in the future.
Tesla has notified current owners that now have until the end of year to buy a new Model S or Model X with free supercharging: "You have free, unlimited Supercharging for your current Tesla vehicle as well as any new Model S or Model X purchased before December 31st, 2017. If you choose to sell your current Tesla, free Supercharging will transfer to the next owner. In addition, up to five friends you refer will also receive free Supercharging."
For those unfamiliar with supercharging, it is a network that could refuel an electric car much faster than the outlet at home. While it may take up for 10-12 hours for a full charge up of 300-400 miles of travel distance, it will take a supercharger 30 minutes to achieve the same results. While most people do not need 300-400 miles of travel distance a day, the supercharger does come in handy when using the vehicle for a long distance trip. Stopping for half a day to charge the car for every 400 miles does not make a very logical investment of time. The pay-per-use model introduced this year is still the default model for accessing the supercharger network for all vehicles purchased last month onward. The default model also comes with 400 kWh in free charging, which equates to about 1000 miles of travel distance.