Wiggley, I should have elaborated my thoughts a bit more there, in my experience Cirrus Approved Service Centres are typically fairly well equipped places and should be able to make such a transition fairly easy.
Infact 2 of them already deal in Pressurized Turbine Aircraft regularly and I'd be surprised if the other 3 didn't already as well!
Cirrus are a pretty top notch company that don't seem to leave a lot to chance and have pretty high levels of customer service, I have little doubt they've already considered the maintenance requirements of these new aircraft and have a plan in place to make sure services are readily available within Australia.