Never mind, found my answer in a previous post:
The beginning configuration is a Long Range Battery with rear-wheel drive and premium upgrades, starting at $49,000. These vehicles come with three options for customization: wheel size, exterior color and Autopilot features.
Which future options will be made available to order, and when?
We are planning to introduce the following options in the coming months:
Fall 2017: White interior option, standard configuration (non-Premium Upgrades)
November 2017: Standard Battery, $35,000 car
Spring 2018: Dual Motor All-Wheel Drive
Additional options will become available over time.