Will the FSD computer make my car fully autonomous?
Not yet. All Tesla cars require active driver supervision and are not autonomous.
[Would imply L2]
With the FSD computer, we expect to achieve a new level of autonomy as we gain billions of miles of experience using our features.
[Now they even refer to "levels of autonomy". This sentence could imply anything between L3 and L5]
The activation and use of these features are dependent on achieving reliability far in excess of human drivers, as well as regulatory approval, which may take longer in some jurisdictions.
[Here the message is significantly toned down from 2016: Not only feature requires "extensive validation", but also they acknowledge that they have not yet achieved sufficient reliability]