Sydney- Australian viewers will get their first HD channels in December when the Ten and Seven networks launch dedicated HD services. These will be the first new commercial free-to-air channels launched in the major mainland metro markets in more than 40 years. For substantial periods each day, TEN-HD will break away from TEN’s primary channel, offering alternative programming and themed events focusing on live sport, entertainment, movies, documentaries and science-fiction. “TEN-HD will excite and entertain audiences across Australia like never before,” said chief executive officer, Grant Blackley. “We are no longer bound by a single linear channel, and TEN-HD is a natural next step in our goal to make our content as widely available as possible to consumers.” Seven said its HD channel will allow the broadcaster to test new and innovative programming concepts. But its statement was short on detail, noting merely that the branding and content will be unveiled in the coming months.