Twitter user Green shared those screenshot of the latest software updates. It shows the code for 100 kWh battery and Ludicrous mode option for the Model 3. There is a fair chance such a moel will be released in 2020.
The 100 kWh would allow for a range of 400+ miles and the ludicrous mode is likely to make you accelerate the car in under 3 sec from 0 to 60mph. Stunning!