Had a quick look at the manual for my HD960 and a live view is available but its only to a TV
“SETTING VIDEO LIVE FEED ON / OFF
You can set your camera to send a live video signal out the side TV or HDTV ports by toggling the VIDEO
LIVE FEED setting on and off. Video Live Feed via the USB port is not supported. When Video Live Feed
is set to OFF (LFF) the camera will switch into video / photo playback mode when one of the included TV
cables are plugged into the camera. If Video Live Feed is turned on (LFO), the camera will stay in normal
camera mode when plugged into a TV and will send a live video signal to the TV. Plugging in the
component cable will send an HD video signal out from the camera, and plugging in the composite cable
will send a standard definition signal out from the camera. Video Live Feed On allows for plugging the
camera into wireless transmitters and TVs for live viewing from the camera. NOTE: If the component
cable is used to send live HD video out from the camera, and you begin simultaneously recording HD
video to the SD card, the live video feed will be reduced to standard definition as the camera cannot
record and transmit HD video at the same time. If you wish to have an HD live video feed from the camera
you cannot begin recording HD video to the SD card. If the composite cable is used to send standard
definition video out from the camera, then the camera can simultaneously record HD video to the SD card.”
According to the go pro site the LCD screen is now available but only fits the 1080HD model
http://gopro.com/hd-hero-accessories/lcd-bacpac