What school did you want to go to? The school should get them soon -- you have to apply7 through the school year 8 and under anyways.
But if you reallyt want the forms now, try
www.acer.edu.au -- they might have it (They had stuff for the UMAT and STAT, I'm pretty sure they had school testing as well) But, that said, when my brother was considering applying, he had to wait till August last year for Caringbah High..