With the retirement of the f111, is Australia actually considering anything to replace that capability? Get our hands on a few b1b's to rebuild and maintain the capacity while waiting for access to an export version of the b21?
Just to add to some of the other comments (and yes I can't ever see a 'B something' in RAAF service anytime soon either).
As someone else mentioned, the RAAF's current long range strike capability is Classic Hornet + KC-30A + JASSM (+ Harpoon for maritime strike).
But if you roll the clock forward around to the mid 2020's, the RAAF's long range strike capability could 'potentially' look something like this, F-35A + KC-30A + JASSM + JASSM-ER + LRASM + JSM.
And it's the potential introduction of weapons such as JASSM-ER, LRASM and JSM that will give the RAAF an even longer ranging strike (and maritime strike) capability over the current combination.
If you look back at the F-111C's introduction to RAAF service, we didn't have 'boom' equipped tankers to support them, in the beginning they could only drop 'dumb' bombs and had to fly over the target, and at the end or their service lives we still didn't have operational boom equipped tankers, but yes they did have longer ranging weapons such as Harpoon and AGM-142's, a 100ish k's or so extra range above a 'dumb' bomb.
I haven't done the maths, but I'd imagine that an F-111C (no tanker), with the approx. 100k range AGM-142, might end up with approx. the same combat radius as an F35A + KC-30A + the approx. 1000k range JASSM-ER for example.
Regardless of above, ultimately the ADF's 'long range strike / strategic deterrent' capability won't be in the hands of the RAAF, it will be in the hands of future RAN submarines equipped with a TLAM 1600k range capability.