I downloaded both versions of the song from iTunes and have been listening to them compulsively. I think I might have to get a couple of the albums.
I think the “denk’ an euch” in the newer version might be part of the nostalgia. On the album version, the last verse is sung with the audience (it sounds like they mixed a live version into a studio version); it gives me the impression that she’s telling her fans (or maybe just the world in general) she’s thinking of them.