Aussie chess players interested in Olympiad duties should especially take note of this latest edition. The deadline for Olympiad selections is currently expected to be about Friday, 20 June, 2008.
The 20 games rule, adopted a few years ago but only now coming into effect, requires each applicant for the Australian Olympiad teams to have played 20 rated games in the previous year by the selection deadline (ie 20 June 2007 - 20 June 2008). The definition of a rated game includes any game rated by the ACF and/or FIDE that is not a rapid play game. A game rated by another federation (eg BCF) will also count where requested, provided that an adequate formula for converting that federation's ratings to either ACF or FIDE ratings exists. Of course, any game can only be counted once.
Regular updates from the ACF can also be read here.