I think that they will paint ZNJ in an anniversary scheme showing a visual history of QANTAS over the past 100 years on the fuselage.
They have already painted a 789 in an aboriginal livery, there are no further retro schemes to use without doubling up (unless they use a TAA/Australian Airlines one!!!
) and they wouldn't promote a One World livery like they have been.
The way that Alan Joyce is talking about the flight crew negotiations they wouldn't paint a Project Sunrise scheme without having a EBA actually signed off. Maybe that would be viable for ZNL in mid 2020 after Project Sunrise is in the bag with agreements and aircraft announcements.