In big stage races like the Tour de France or the Giro d'Italia they tend to have a smaller event the night before the race starts proper. It's usually a Time Trial (or Team Time Trial) and doesn't count towards the main race. This, my friends, is known as a Prologue.
The Dirty Deeds prologue will have some things in common with its fancier cousins. Results won't count towards the aggregate, and it won't be the same as a normal CX race. We're still locking in the locations, but we're hoping to hold it on a grassy (read: muddy) footy oval in the wild heart of Brunswick. But it will not be a Time Trial, mostly because Time Trials take ages to run and are boring to watch. No, you will be pitted against your mates in some tight, slippery, action packed racing. June 3rd, right? That's only two months away now. Start getting your bikes ready.