i'd assumed it was the same as all the later notifcation scholarships - you find out after you accept an offer into the course...since the only criteria are your UAI and getting into one of the relevant courses after having it in your top 2 preferences...
you won't receive the money straight away - they give it to you after census date so if you don't continue the course you don't just run away with the money - but you'll probably get notification around uni offers t ime