They've left out a very subtle change on one of those aeroplanes. After the merger (takeover) of Australian QF for a time dropped the 'spirit of Australia' slogan and became 'the Australian airline' as a nod to the former domestic carrier. Not sure how long it last but it was a few years- maybe 5 or so from end of 92 or early '93 through until at least '97 or so because I think it was still current when I checked out as an F/O.
No change t the roo though so technically doesn't fit the 'logo' change but it was a livery change.