http://www.ramint.gov.au/media/press-releases/2011/20110623.cfm
See also:
http://www.abc.net.au/news/stories/2011/06/23/3251489.htm?section=justin
The Crown Prince of Tonga, Tupouto'a Lavaka, says his new government
is also updating its coins and will have them minted in Canberra. "I
wanted to come and see how the processes work and of course this is
the new refurbished Royal Australian Mint," he said. "We, like Samoa,
have our own coins. And we are looking about two years time to look at
renewing our currency. That's already in the pipeline now."
That's a lot of new national circulation sets in the pipeline now:
http://www.worldofcoins.eu/forum/index.php/topic,10110.0.html