Have not watched the first episode of the season yet, but the show is kind of like Survivor and Big Brother on steroids. I love it! While most of the cast are returning cast members or veterans, there are always rookies. Most veterans are from Real World, since the Challenge has only accepted alumni from RW until Vendettas, when they started to accept people from a wide range of reality tv. This season it's us v. uk, and it looks great!