Group G are the heavier types, will remain LAME or now can be L4 maintained.
Current aircraft will continue as currently, self or L2 for training
Distributed FAQ to members via email few days ago
Few interesting points is the inference that Group G, by the fact they don't just say "training" MAY be used for hire or reward
Also that current experimental can maybe move to group G with increased MTOW and stall speed, these could maybe be self maintained yet.
Wont know anything until CASA releases their plan, could vary from rumours and what RAA expect.