Selections for the 2008 Australian Olympiad teams are now officially open. Actually, the selections were apparently officially opened more than a week ago but I've only just received the email containing the notice today (via the ACF's newsletter, Issue No. 417, April 27, 2008)! That's the ACF for you.
Anyway, here are the crucial dates:
14 April Applications Open
20 June Applications Close
1 July Deadline for Corrections / Material to Selectors
15 July Deadline for Selectors' Votes - provisional selection results advised ASAP to all applicants and published.
A full copy of the notice is available here.