FWIW Tesla doesn't use model years. Technically the model year is encoded in the VIN but it flips over at the start of the calendar year and isn't associated with any particular changes to the vehicle. Tesla has been adding features as soon as they're ready since launch. (e.g. parking sensors, power folding mirrors, upgraded seats etc)

That was the entire point of model years. They needed way to make people want to upgrade their 'old' car. So instead of making the Ford Focus for 10 years there is the 2013 Focus and the 2014 Focus and....

Now your Focus is only a 2012 Focus. You're behind.