Next month, Tesla will no longer offer the Model S sedan with a 60 kilowatt-hour battery pack — the cheapest car it sells. With the change, the Model S will start at $74,500 with a 75kWh battery before any state or federal tax incentives, up from $68,000 currently. Of course, Tesla will launch the Model 3 later this year, which will be much cheaper still, starting around $35,000.

Model S cars with a 60kWh battery pack purchased since last spring (and 70kWh versions, which were available for a limited time as well) actually come equipped with a 75kWh battery pack, only buyers could only access 80 percent of that pack.

After purchase, if buyers decided they wanted the extra range that the full battery pack could give them, they could “unlock” the extra battery capacity through a sort of in-app purchase. In the case of the Model S 60, upgrading the battery to 75kWh is a $9,500 option.

The news was first revealed by Electrek and confirmed by Tesla. The company sent this email to customers today: