I'm fairly confident that EVERYONE will get ALL the fixes, no matter what they are, no matter what additional discs might
be updated in addition to the ones we already know about.
If (and it's a big if) they decide to fix errors on discs 2, 5 or 6 then we'll get those too. My feeling is that if the changes are limited to discs 1, 3 and 4, then those of us who contacted Deluxe in the US will just get those discs as we were told originally. If CBS decides to change more discs for whatever reason, then they'll probably do what Amazon UK is doing and send us a brand new set, then request the old one back.
This isn't going to be a situation where customers in the US get some fixes and customers in other parts of the world get all the fixes. That's absurd and makes no sense.