As far as I know, Amazon Australia's FBA (Fulfillment by Amazon) currently does not support FBA Export programs to Japan or the USA. For Australian Amazon sellers, apart from direct shipping methods like the Global Selling program, there are no other specific supports from Amazon Australia in this regard.

Regarding future plans for enabling FBA exports to markets like Japan or the USA, I do not have information on whether such changes are planned or under consideration by Amazon Australia. For updates on this matter, it would be best to check directly with Amazon's seller support or official announcements from Amazon Australia.