sentences:  In preparation for the launch of 10 HD, Ten's digital terrestrial channel line-up was updated on 19 November 2007, with changes consisting of LCN1 redirecting Network 10's current high-definition simulcast.Following this, on 21 November 2007, Ten Network Holdings Limited announced that it would launch the channel on 16 December 2007 at 5.00 pm, with the first program, "Totally Wild".Ten HD officially commenced transmission on 16 December 2007 from the network's five metropolitan owned-and-operated stations in Sydney, Melbourne, Brisbane, Adelaide, and Perth.