For anyone who hasn't seen this yet:

CAMS TO MAKE FRONTAL HEAD RESTRAINTS MANDATORY

From 1 July, 2014 all international and national circuit races, road events and off road events, except where specifically exempted due to the type of vehicle;

From 1 January, 2015, all state circuit races, road events and off road events, except where specifically exempted due to the type of vehicle.

This does not include Speed events and Auto tests.
It's a good move over all. I assume this would not affect the Rally Sprints