I think for the model 3 it still shows P in transport mode. She's got the newer 9 software.
I'll check on my S at lunch too, see if it's more like a X or 3. I'm not on 9 yet.
I have seen Tesla do other changes to update the UI to match standards and conventions, maybe to get into compliance with more local laws. They updated the labels on the exterior lighting selector, removing words, and putting in symbols. I think symbols are called for in countries like where I live (Canada).
I do understand it must be a nightmare making a car compliant with every differences in standards around the world.
Yah, my bad, the 3 manual doesn't call out what the PRND does, only that the Transport Mode button turns blue,