Optus announced plans to launch commercial LTE service in April 2012.
Optus also announced that it just became the first Australian carrier to be awarded a licence to trial LTE services in the 700 MHz spectrum band. A trial will take place in Bendigo, Victoria and will be the first time in Australia that the former analogue TV frequency will be used for 4G services and applications. Huawei has been selected for this trial.
https://www.optus.com.au