BS. The launches always result in preorder demand and these same logistics exercises. The release date is the release date. Apple has a well oiled process for getting the hardware out on the date they announce as the release date. Not doubting that the supervisor told you that but they're completely wrong.
The supervisor probably means 1 day early release - AKA the 24th, then it gets overnight shipping applied to it = 25th which is release date. Way to go, "supervisor"!