The iPad mini will be available in three separate models, with Wi-Fi + 4G in 16-GB for $509, a 32-GB version for $619 and a 64-GB version for $729. The Wi-Fi version alone will retail for $389 for the 16GB model, $479 for the 32GB model and $589 for 64GB. It will come in black and slate, or white and silver. And it will support Australian 4G networks, through Telstra and Optus.