The Re app available for Android and, later this year, iOS, lets you see what the camera sees. The Re connects to your mobile via Wi-Fi with some connection help from Bluetooth. You can control the camera and settings as well as transfer shots off the camera to your device for viewing and sharing.
The HTC Re camera will be coming to the US first in late October/early November and the UK in November. It'll cost $199 and somewhere around £160-£170 in the UK. Pricing and availability is unknown for Australia, but converts to about AU$226.