When it does get introduced you will probably find that suspension places will end up getting certified to do the modification to your suspension and will simply be not much more than having a receipt from a certified company/person who carried out the modifcation.
It is in the interests of these companies that they will get a certifcation system happening at point of installation or else some people will think its all too hard and not bother, hence they lose business.
And dont be fooled by thinking if you get it done before a certain time you'll be exempt, it will come out for everything on the road.
4x4 drivers arent happy either.... They can only go up 2". The current law states the vehicle can only be raised 2" without having to perform a swerve test. So take a 100series Toyota Cruiser or GU Nissan Patrol. They have an quivilent of 31" diameter tyre standard. Most common improvement is to go to 33" tyres (yes larger is still common but 33" most common)
These larger tyres can rub when the vehicle is off road, so a suspension lift is needed. Without having to perform a swerve test for the RTA a lot of people just get a 2" lift (cos fat chicks cant jump) but combined with the incresed diameter tyres which will increase the vehicles height by 1 "at the hub, they now have a total of 3" of lift which is technically illegal. Yet these were an everyday modification for people to make their vehicles suit Australain conditions which technically you now cant do. Hence I got out of my beloved fourby and returned to something more civilised.
Years ago my father once told me, if you want a fast car, buy a fast car, dont buy something else and try and make it faster. He was right, cos now at the end of the day, the law is just going to make it tougher and more costly. So I bought STi Lib, its the package i want, and the cops can't do much to me cos its standard.
Someone in this thread asked if lowering your car will affect stability control. Well yes it will, while your car may have slightly better handling, the control system was optimised for as the vehicle rolled off the production lines for the conditions it was to encounter. Now you may be thinking that you have made it better.... your car will go harder without it needing to kick in. But when you do reach the level where it needs to engage on your modified suspension, you may be passed the point where it is still able to help you. Obviously mild changes arent going to be a big deal,, but the more you change its handling, the less the system will be able to help. Just ask my mate with his 350Z that he fitted twin turbos to.... traction control is a laugh, its got no chance even in the dry in 4th gear, but then we never expected it would.

While we all lauded the introduction of safety features like stability control and airbags etc, it is these very things that the government now have to legislate for so that they still perform properly, afterall arent they trying to make it an ADR for stability control in every new vehicle because of it perceived safety benefits? It was the airbag that was the final nail in the coffin for the 5 poster bullbar that so many country boys love on their BnS utes. Yeah I know a WB doesnt have airbags but they have to make it across the board to be fair. We perceive it as bull, they have a job to do.