According to reports, Tesla has very quietly added a new model to the Model S and Model X. Called the 100D, you lose the "P," and supercar performance; however, you gain something far more important.
That would be more miles on a charge.
The Model S 100D can do a claimed 335 miles of driving and the Model X 100D can achieve 295 miles on a full charge. As this applies to all EVs, this depends on driving style and weather conditions.
If you were considering ordering a new Tesla, keep these 100D models in your consideration set. While you will not get the same performance as the P100D vehicles, these 100D vehicles only run $3,000 bucks more than the 90D variants and the 100Ds get to 60 in 4.2 and 4.8 seconds in the Model S and Model X, respectively.