The free event, which annually attracts 100-150 people, is a participation-based unconference, where every attendee is encouraged to actively participate in workshops, give a presentation on a favoured topic and to network with other attendees.
Given it is Canberra, alongside design, technology, data and similar topics, policy development and Government 2.0 are regularly subjects of discussion and presentations.
Note that third of tickets have already been booked for the event, so if you want to go, register now at: http://barcampcanberra2013.eventbrite.com
Full details are at the BarCamp Canberra website: http://barcampcanberra.org/
To learn more about BarCamps, visit: http://en.wikipedia.org/wiki/BarCamp
Caveat: I'm on the unorganising committee for BarCamp Canberra.