Orbx would only be taking a cut from the sale of Landmarks Cairns, the majority would be going to the developer Nethiuz. Orbx is working on fixing Brisbane Landmarks and Sydney Cityscape but “Adjusting hundreds of objects and polygons to match the new photogrammetry content is a major undertaking”:
^ Photo is Landmarks Brisbane
Orbx might hand to start from scratch again as there was an update to World Update VII: Australia after installing WU8.
You can follow Orbx’s progress here: Compatibility news regarding World Update VII - Australia
@Nethiuz Impulse Simulations still has MSFS Cairns Landmarks as coming soon.