…drones weighing less than 2kg will not need to be licensed at all. Owners only need to notify CASA of their use if it is for commercial purposes. Similarly, drones under 25kg can also be flown without licensing or notification requirements if they are used for “sport and recreation”, or if they are flown on private land and used for private aerial photography, spotting, communications or agricultural operations.

Operators of drones weighing more than 100g will still have to steer clear of certain areas, under the so-called “standard RPA operating conditions”. This means no flying in controlled or prohibited airspace; above 400ft (122m); at night; in swarms; over emergency operations without approval; within 30m of another person; out of the pilot’s direct line of sight; or in an area of “sufficient density of population for some aspect of the operation … to pose an unreasonable risk to the life, safety or property”.
http://www.smartcompany.com.au/technology/emerging-technology/76139-new-rules-will-mean-more-drones-in-the-sky-and-that-has-implications-for-privacy/