Well, I haven't bought a new, unsealed Blue Box Thoth in many years, so I don't know if that's the latest printing, or unopened older stock, but there was a 1986 printing and a 1996 printing, and they do look different from each other.
That's the question--has there been a new printing since 1996, with a later copyright date?
Perhaps someone here who has bought a new box recently could tell, or was your deck new and still sealed?