Keep in mind those are only available in the box with the 4K, the individual releases are still the 2011 version.
Have we ever gotten confirmation of that? Only one source said that, and it only said it was a rumor, so I’m not sure.
I believe that’s correct: the new masters on blu-ray are only included as a pack-in on the 4K UHD releases (either the full box or the individual titles). The discs in the blu-ray only release are from 2011. I believe there is no way to buy the new masters on blu-ray unless you are buying the 4K discs.
The UK blu-ray only Skywalker Saga box that was talked about frequently in this thread before the release might be different, but I don’t know that anyone who bought that one (the Wal-Mart link that kept getting posted was essentially a link to import the UK set) has written about it since they got it.