On 1 July 2012, IP Australia will increase the majority of its official fees. Here's the link: http://www.ipaustralia.gov.au/about-us/news-and-media/latest-news-listing/?doc=fee-review-update&view=Detail
The first renewal fee will be payable by the fourth anniversary of the filing date instead of the fifth. This applies to all patent applications filed on or after 1 July 2008.
Application fees will increase on 1 October 2012.