Sorry mate, I don't into this area of the forum much..
I doubt if any EM chip upgrades would be done through the BMW dealerships here, at least not for a while. I know John Cooper Works kits will become available and fitted through your Local BMW dealerships. I daresy full turn-key works cars will become available as well after the Cooper S starts driving out of dealerships doors.
The warranty in Oz is only 24 months, so not too long to wait for an upgrade.
cheers