AUKUS leaders will reportedly announce the plans for Australia's nuclear submarines next Monday:

https://breakingdefense.com/2023/03/aukus-sub-announcement-expected-in-san-diego-next-week-albanese-biden-sunak-in-person/

This is quite a specific question. I am trying to avoid a situation where the question too easily resolves to an answer similar to 'a combination of American and British technology', thus focusing on hulls instead of the complete package.

If poeple are unaware:

Astute Class is the current generation of British nuclear attack submarines

SSN(R) is the planned next generation of British nuclear attack submarines

Virginia Class is the current generation of US nuclear attack submarines

If the Monday announcement does not contain relevant details, the market will resolve NA. If the announcement is delayed, I'll use best judgement on whether to resolve NA or wait.