My answer is that if you haven't changed over to the new system by the June 2009 but have remained current you will automatically go onto a 24 month cycle then, whatever. In such a case therefore you will not need to see an examiner until June 2011.
If you do not revalidate and change over to the new system before the end of the transition period (assumed to be 30 Jun 2009), you will then need to
renew your SSEA Class Rating by passing a GST with an Examiner. You can change over to the new system anytime before then, but
only if your SSEA Class Rating is valid! Maintaining 'currency' (or rather 90 day recency) is not sufficient, you will need to hold a valid Rating when you contact your Examiner.
There will be
no 'automatic' changeover, so please do not start such a groundless rumour!
The AIC should be released before the end of April, according to the CAA. The reason for the delay was an intervention by a member of the public.....