The details of what design the new AU boats will have and what exact material (and materiel) assistance US/UK will provide is still unknown. The above rambling posts I made are "guesses" or theories I have seen presented as "news".

Since any such program would be years in the making and things are getting more tense in the South China Sea, one of the articles suggested that we (the US) will base some Virginia-class boats out of Perth as a stop-gap.

"They also mention that the US maybe running Virginia-class boats out of Perth until the Aussies have their new boats at sea."

I wonder if somewhere down the line a Virginia class may make Australia it's home port??

The below articles (from a generally good site) suggest that the subs will be home-built by AU, probably based on Astute design. They also mention that the US maybe running Virginia-class boats out of Perth until the Aussies have their new boats at sea. And lastly, there seems to be a deal between AU and the US on giving the Aussie's Tomahawk TLAM weapons, initially for their destroyers, and perhaps later to arm the new subs.

Anyway, the big flick seems to be either the US builds the hulls in sections and ships the sections to AU for assembly, with the UK providing the reactors, OR the UK ships sections to AU for assembly with a US reactor... OR AU builds the hulls in Perth, with either a US or UK provided plant. All we really know for sure is the French are pissed off that their deal with AU is falling through (after years of delay and billions in cost overruns).

I'd suggest keeping an eye on this site: http://www.hisutton.com/ This fellow is almost never wrong about the things he writes. 

It is reported in the news that Australia is purchasing new nuclear powered submarines from the U.S. and U.K.

How are we (U.S.) going to build submarines for another country when our shipyards are backed up while maintaining our own boats. Some have been parked by the pier for years waiting for their turn in the yard.

Inquiring minds want to know.