Australia will buy 5 Virginia boats form the US in the 2030s. That is an interims solution, they want to rebuild a new class for the time after those buyings, basing on the British Astute class and American submarine technology.
https://www.reuters.com/business/aer...es-2023-03-08/
https://www.bloomberg.com/news/artic...-counter-china
https://www.wsj.com/articles/austral...nsion-1bd94418
The long haul solution - if they are able to financially maintain it through all those years.