Sydney- After protracted negotiations, Network Ten and Endemol Southern Star have confirmed the eighth season of Big Brother will air on Ten in 2008, but long-time host Gretel Killeen is being replaced by radio personalities Kyle Sandilands and Jackie O. The producers promise there will be a “tighter, re-energised format” and for the first time, hopeful Housemates can submit a video audition via the Big Brother website. Killeen said: “I’m really proud of what we’ve achieved but I now have the ‘seven year itch’ and am busting to get on with a million new things, including my first feature film which we’re shooting in the new year.” David Mott, Ten’s chief programming officer, said ” Gretel’s wish to concentrate on new projects gave us the opportunity to start at the top in making BB08 a completely different show.” Sandilands is one of the judges on Australian Idol and Jackie O presented Granada’s reality show Australian Princess on Ten.