Thanks for replying, Donald.
So I think what you're saying effectively is there will be two official versions of Dominion (for the time being): Dominion (with actual cards), and Dominion Online. The only unfortunate and not "tiny almost-never-matter" issue, that I know of, is Stash, which will be significantly different in the two versions - up until the point of a new printing of course.
I didn't necessarily mean to ask about getting all the new card texts now, sorry that I was unclear. I meant the card texts that are going to be implemented online, of not in advance then at least when they are implemented online. I mean, the card texts will be there online for all to see and read, and they will in any case be the official cards of Dominion Online. So I was asking if it's possible to get the new texts at that point instead of having to screen grab each and every one. The issues you list shouldn't apply to that I think, since it's about the cards of Dominion Online, where the texts provided are the ones used (at least until any errors are corrected).
Printed sets like Hinterlands are different, hopefully someone will scan them. Or hopefully the new rulebook is going to be available online, that would do the trick since it has scans of all the cards.