Like EU (Europe), AU (Australia, the main states) are nanny states in comparison to US.
There is Learner licence, followed by a couple/few years of Probation/Restricted licence before Full licence.
In order to sell bigger bikes to Restricted licence riders (the main market for some models), a special 'restricted model' is imported with power cut (but not torque).
The 650F/R is now only available in 'restricted model' (with around the same power as 500). Same for the new 2017 Ninja 650.
Great for Restricted licence riders, sucks for the rest since the normal (full power) model is not imported/sold.