https://www.cnet.com/roadshow/news/tesla-model-s-x-pricing-naming-change/

But wait, there's more! Those buyers who were a little salty at being left out in the cold with the discontinuation of a lower-cost Model S or X can rejoice, because now there will be a new base trim, simply dubbed Model S or Model X. Those buyers who want more range but less power can go with Model S or X Extended Range.

The exciting thing is that the base models will feature less range and power than other models as you'd expect, but those limitations are strictly software-based. Buyers can opt at a later date to upgrade their vehicles to higher trim levels with an over-the-air software update. This way, if your needs change or you sell your app or something, you can go from base model to top-tier with just a big pile of money and a small chunk of time.