The OP is referring to EVAP (Emirates Visit Australia Pass) as opposed to the Virgin Blue Air Pass. Last time I spoke to EK about the evap (it was through an email to a local EK office staff) I was told these fares are correct to the end of the promotion (31 March 2012). I was also told that this year the promotion will be most likely terminated but if it continues there will be a revision of the zones/fares.