This hasn't been posted anywhere yet - source is SMH.com.au.
"More than 350 passengers and crew have been evacuated from a Sydney-bound Qantas flight from Los Angeles after a bomb threat.
Qantas flight 12 had been due to take off at 10am (0300 AEST) today from Los Angeles International Airport but was delayed after the security alert. A total 347 passengers and 20 crew were ordered off the plane.
No further details of bomb threat were available, a spokesman for Los Angeles World Airports said.
The plane was rescheduled to take off at 11pm (1600 AEST), officials said."
Looks like the QF12 was already delayed 10 hours if it was leaving in the morning.
Link to story here (with spelling errors) as well with a video - aircraft is VH-OEB (new livery).
http://cbs2.com/local/Quantas.Bomb.Threat.2.774675.html