As of when I'm posting this, on the iMac page on Apple Australia's website,
http://www.apple.com/au/imac/
the Order Now button at the top right goes to the G5 ordering page while the Order Now button at the bottom right goes to the Intel ordering page.
On the equivalent US page,
http://www.apple.com/imac/
both Order Now buttons go to the G5 ordering page.
Oops.
(No, I'm not going to buy one just yet - was just pricing options)
UPDATE (2006-01-23): Apple Australia has fixed their links but the US page still has Order Now buttons going to the G5 ordering page.