This isn't Harry Potter. Text doesn't change.

New revisions are issued, but the text changes no more in those instance than it does when a publisher releases an update to a print work originally published in 1985 with a second edition. The text of the second edition might differ from the first edition, but the first edition's text doesn't change, and the first edition is still the first edition (instead of the first and second editions being synonymous). And the publishers of the print editions could try lying about the identity of these two distinct manifestations the way that online publishers lie about the identities of the works they publish, but no amount of lying about it makes the lie true.

Text doesn't change.