Vaguely I recall that the RAAF Supers were going to be updated for sure some time back. The GROWLERS FOR CERTAIN.
The F-16.net link has not been read by me so far. Meanwhile this is a quote about the situation from mid this year
13 Jul 2023:
https://aviationweek.com/defense-spa...re-competition
"LONDON—A missing piece in Australia’s fighter inventory will be filled in the short term by extending the life of the Boeing F/A-18E/F Super Hornet for at least another decade and then afterward will be opened up for competition as a new generation of air combat aircraft are scheduled to arrive in service, the head of the Royal Australian Air Force (RAAF) told Aerospace DAILY July 13....
...“What the fourth squadron of F-35s has become is the Super Hornet replacement, not just [a plan to buy] the fourth squadron of F-35s,” Chipman [Air Marshal Robert Chipman, the RAAF chief] said.
The F-35 remains a candidate for the Super Hornet replacement, but the RAAF will consider alternatives. In the mid-2030s, those might include collaborative combat aircraft such as the Australian-built Boeing MQ-28 Ghost Bat, and next generation fighters produced by the U.S., a British-Japanese-Italian consortium and a French-German-Spanish group.
“We will look at the F-35 and we’re very, very comfortable and very happy with the capability of the F-35,” Chipman said. “But it would be remiss of me not to look at what else is available for us to replace our Super Hornets in the future.”"