According to Paine Field Blog "ZB281 Qantas 787-9 VH-ZNM moves to the 45-01 April 30 for repaint."
VH-ZNM on flightline
If the 7 weeks between ZNL going in for repaint and delivery holds, that would see ZNM delivered around 18th June.
If there was extra time involved in getting ZNL ready for its Project Sunrise test, then we might possibly see ZNM earlier.