So I've been pondering the hardware description and could not really understand why would they get rid of a fan in hw2.5, makes no sense, right?
Well, I got to look at actual diagrams today from a very resourceful source. HW2.5 is liquid cooled so they don't need that fan. Additionally I do see the second parker chip added.
OK, so apparently Model S/X are not shipping with this HW 2.5, assuming the spokesperson was not right. Perhaps they really are shipping with HW 2.1, while Model 3 is shipping with HW 2.5.
Buyer's beware: WAIT.