It hasn't been announced yet, but my guess is that Survivor 5 will start either on September 26th or October 3rd. And, I think they will end it before Christmas, rather than letting it go into January - if they let it go to January, there will have to be either some repeat weeks, preempted weeks, or specials weeks. I can't see them showing a new episode on Dec 26th - too many people would miss it.