Further to the national series, round one is also the first round of Full Gas Promotions' 2012 Cross Melburn series. It's not just for A graders, there will be B grade, womens, juniors and open mens/womens/juniors classes.
They've branched out this year, and races are being held at a gokart track, the Lysty pump track and Nortons Park. Variety is the spice of CX, so get out and race or heckle.
All the info you need is here: http://fullgaspromotions.com.au/20110723211/News/specialized-cross-melburn