I was told by a "New Car Sales Rep" that the new Camry will be releasing sometime in September this year... That said, i havent seen anything online that backs up his statement...
This shouldnt really be an issue. you will only change the tyre once in a blue moon. Plus you can always call NRMA to change the Tyres for you as im guessing you will have road side assistance since your going four wheel driving...
Im sure it wasnt advertised by the dealer as a 6 stacker. the OPs mentioned that is says 6 stacker in the vehicle specs and booklet that came with the vehicle...